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Finding the Fourth Proportional to 335,043.80, 502,565.70 and 318,714.20

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Solution

The fourth proportional to 335,043.80, 502,565.70 and 318,714.20 is: 478,071.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,043.80 : 502,565.70 = 318,714.20 : x
  2. Step 2: Convert to fraction form
    335,043.80/502,565.70 = 318,714.20/x
  3. Step 3: Cross multiply
    335,043.80x = 502,565.70 × 318,714.20
  4. Step 4: Simplify right side
    335,043.80x = 160,174,825,022.94
  5. Step 5: Solve for x
    x = 160,174,825,022.94/335,043.80
  6. Step 6: Final answer
    x = 478,071.30

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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.