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Finding the Fourth Proportional to 438,891.70, 658,337.55 and 368,032.90

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Solution

The fourth proportional to 438,891.70, 658,337.55 and 368,032.90 is: 552,049.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,891.70 : 658,337.55 = 368,032.90 : x
  2. Step 2: Convert to fraction form
    438,891.70/658,337.55 = 368,032.90/x
  3. Step 3: Cross multiply
    438,891.70x = 658,337.55 × 368,032.90
  4. Step 4: Simplify right side
    438,891.70x = 242,289,877,705.40
  5. Step 5: Solve for x
    x = 242,289,877,705.40/438,891.70
  6. Step 6: Final answer
    x = 552,049.35

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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.