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Finding the Fourth Proportional to 481,146.89, 720,282.38 and 291,031.92

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Solution

The fourth proportional to 481,146.89, 720,282.38 and 291,031.92 is: 435,678.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,146.89 : 720,282.38 = 291,031.92 : x
  2. Step 2: Convert to fraction form
    481,146.89/720,282.38 = 291,031.92/x
  3. Step 3: Cross multiply
    481,146.89x = 720,282.38 × 291,031.92
  4. Step 4: Simplify right side
    481,146.89x = 209,625,162,538.41
  5. Step 5: Solve for x
    x = 209,625,162,538.41/481,146.89
  6. Step 6: Final answer
    x = 435,678.10

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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.