Home / 260,554,189.43-390,843,853.59-85,673,351.34

Finding the Fourth Proportional to 260,554,189.43, 390,843,853.59 and 85,673,351.34

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Solution

The fourth proportional to 260,554,189.43, 390,843,853.59 and 85,673,351.34 is: 128,514,159.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,554,189.43 : 390,843,853.59 = 85,673,351.34 : x
  2. Step 2: Convert to fraction form
    260,554,189.43/390,843,853.59 = 85,673,351.34/x
  3. Step 3: Cross multiply
    260,554,189.43x = 390,843,853.59 × 85,673,351.34
  4. Step 4: Simplify right side
    260,554,189.43x = 33,484,902,787,695,588
  5. Step 5: Solve for x
    x = 33,484,902,787,695,588/260,554,189.43
  6. Step 6: Final answer
    x = 128,514,159.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.