Home / 313,689,996.71-432,889,801.66-172,558,178.16

Finding the Fourth Proportional to 313,689,996.71, 432,889,801.66 and 172,558,178.16

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Solution

The fourth proportional to 313,689,996.71, 432,889,801.66 and 172,558,178.16 is: 238,128,969.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,689,996.71 : 432,889,801.66 = 172,558,178.16 : x
  2. Step 2: Convert to fraction form
    313,689,996.71/432,889,801.66 = 172,558,178.16/x
  3. Step 3: Cross multiply
    313,689,996.71x = 432,889,801.66 × 172,558,178.16
  4. Step 4: Simplify right side
    313,689,996.71x = 74,698,675,518,543,600
  5. Step 5: Solve for x
    x = 74,698,675,518,543,600/313,689,996.71
  6. Step 6: Final answer
    x = 238,128,969.05

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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.