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Finding the Fourth Proportional to 482,633.20, 665,937.30 and 291,656.80

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Solution

The fourth proportional to 482,633.20, 665,937.30 and 291,656.80 is: 402,428.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,633.20 : 665,937.30 = 291,656.80 : x
  2. Step 2: Convert to fraction form
    482,633.20/665,937.30 = 291,656.80/x
  3. Step 3: Cross multiply
    482,633.20x = 665,937.30 × 291,656.80
  4. Step 4: Simplify right side
    482,633.20x = 194,225,141,918.64
  5. Step 5: Solve for x
    x = 194,225,141,918.64/482,633.20
  6. Step 6: Final answer
    x = 402,428.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.