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Finding the Fourth Proportional to 462,951.55, 638,897.95 and 258,990.30

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Solution

The fourth proportional to 462,951.55, 638,897.95 and 258,990.30 is: 357,420.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,951.55 : 638,897.95 = 258,990.30 : x
  2. Step 2: Convert to fraction form
    462,951.55/638,897.95 = 258,990.30/x
  3. Step 3: Cross multiply
    462,951.55x = 638,897.95 × 258,990.30
  4. Step 4: Simplify right side
    462,951.55x = 165,468,371,092.41
  5. Step 5: Solve for x
    x = 165,468,371,092.41/462,951.55
  6. Step 6: Final answer
    x = 357,420.49

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1.5x scale

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.