Home / 290,019,307,997.40-400,247,798,195.10-168,115,514,031.15

Finding the Fourth Proportional to 290,019,307,997.40, 400,247,798,195.10 and 168,115,514,031.15

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Solution

The fourth proportional to 290,019,307,997.40, 400,247,798,195.10 and 168,115,514,031.15 is: 232,011,671,216.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,019,307,997.40 : 400,247,798,195.10 = 168,115,514,031.15 : x
  2. Step 2: Convert to fraction form
    290,019,307,997.40/400,247,798,195.10 = 168,115,514,031.15/x
  3. Step 3: Cross multiply
    290,019,307,997.40x = 400,247,798,195.10 × 168,115,514,031.15
  4. Step 4: Simplify right side
    290,019,307,997.40x = 67,287,864,333,405,217,882,112
  5. Step 5: Solve for x
    x = 67,287,864,333,405,217,882,112/290,019,307,997.40
  6. Step 6: Final answer
    x = 232,011,671,216.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.