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Finding the Fourth Proportional to 313,689,997.71, 432,889,803.04 and 172,558,179.16

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Solution

The fourth proportional to 313,689,997.71, 432,889,803.04 and 172,558,179.16 is: 238,128,970.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,689,997.71 : 432,889,803.04 = 172,558,179.16 : x
  2. Step 2: Convert to fraction form
    313,689,997.71/432,889,803.04 = 172,558,179.16/x
  3. Step 3: Cross multiply
    313,689,997.71x = 432,889,803.04 × 172,558,179.16
  4. Step 4: Simplify right side
    313,689,997.71x = 74,698,676,189,513,440
  5. Step 5: Solve for x
    x = 74,698,676,189,513,440/313,689,997.71
  6. Step 6: Final answer
    x = 238,128,970.43

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