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Finding the Fourth Proportional to 487,656.10, 731,447.70 and 203,273.20

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Solution

The fourth proportional to 487,656.10, 731,447.70 and 203,273.20 is: 304,894.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,656.10 : 731,447.70 = 203,273.20 : x
  2. Step 2: Convert to fraction form
    487,656.10/731,447.70 = 203,273.20/x
  3. Step 3: Cross multiply
    487,656.10x = 731,447.70 × 203,273.20
  4. Step 4: Simplify right side
    487,656.10x = 148,683,714,611.64
  5. Step 5: Solve for x
    x = 148,683,714,611.64/487,656.10
  6. Step 6: Final answer
    x = 304,894.61

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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.