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Finding the Fourth Proportional to 331,547.20, 496,737.60 and 272,060.80

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Solution

The fourth proportional to 331,547.20, 496,737.60 and 272,060.80 is: 407,612.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,547.20 : 496,737.60 = 272,060.80 : x
  2. Step 2: Convert to fraction form
    331,547.20/496,737.60 = 272,060.80/x
  3. Step 3: Cross multiply
    331,547.20x = 496,737.60 × 272,060.80
  4. Step 4: Simplify right side
    331,547.20x = 135,142,828,846.08
  5. Step 5: Solve for x
    x = 135,142,828,846.08/331,547.20
  6. Step 6: Final answer
    x = 407,612.64

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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.