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Finding the Fourth Proportional to 438,753.94, 658,130.91 and 106,329.94

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Solution

The fourth proportional to 438,753.94, 658,130.91 and 106,329.94 is: 159,494.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,753.94 : 658,130.91 = 106,329.94 : x
  2. Step 2: Convert to fraction form
    438,753.94/658,130.91 = 106,329.94/x
  3. Step 3: Cross multiply
    438,753.94x = 658,130.91 × 106,329.94
  4. Step 4: Simplify right side
    438,753.94x = 69,979,018,128.38
  5. Step 5: Solve for x
    x = 69,979,018,128.38/438,753.94
  6. Step 6: Final answer
    x = 159,494.91

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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.