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Finding the Fourth Proportional to 316,114.13, 436,240.94 and 172,871.10

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Solution

The fourth proportional to 316,114.13, 436,240.94 and 172,871.10 is: 238,564.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,114.13 : 436,240.94 = 172,871.10 : x
  2. Step 2: Convert to fraction form
    316,114.13/436,240.94 = 172,871.10/x
  3. Step 3: Cross multiply
    316,114.13x = 436,240.94 × 172,871.10
  4. Step 4: Simplify right side
    316,114.13x = 75,413,448,981.63
  5. Step 5: Solve for x
    x = 75,413,448,981.63/316,114.13
  6. Step 6: Final answer
    x = 238,564.00

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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.