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Finding the Fourth Proportional to 529,135.20, 792,925.20 and 213,040.80

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Solution

The fourth proportional to 529,135.20, 792,925.20 and 213,040.80 is: 319,248.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,135.20 : 792,925.20 = 213,040.80 : x
  2. Step 2: Convert to fraction form
    529,135.20/792,925.20 = 213,040.80/x
  3. Step 3: Cross multiply
    529,135.20x = 792,925.20 × 213,040.80
  4. Step 4: Simplify right side
    529,135.20x = 168,925,418,948.16
  5. Step 5: Solve for x
    x = 168,925,418,948.16/529,135.20
  6. Step 6: Final answer
    x = 319,248.12

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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.