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Finding the Fourth Proportional to 555,335.20, 833,877.60 and 319,139.20

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Solution

The fourth proportional to 555,335.20, 833,877.60 and 319,139.20 is: 479,211.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,335.20 : 833,877.60 = 319,139.20 : x
  2. Step 2: Convert to fraction form
    555,335.20/833,877.60 = 319,139.20/x
  3. Step 3: Cross multiply
    555,335.20x = 833,877.60 × 319,139.20
  4. Step 4: Simplify right side
    555,335.20x = 266,123,030,161.92
  5. Step 5: Solve for x
    x = 266,123,030,161.92/555,335.20
  6. Step 6: Final answer
    x = 479,211.53

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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.