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Finding the Fourth Proportional to 655,543.72, 983,439.60 and 256,159.24

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Solution

The fourth proportional to 655,543.72, 983,439.60 and 256,159.24 is: 384,287.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,543.72 : 983,439.60 = 256,159.24 : x
  2. Step 2: Convert to fraction form
    655,543.72/983,439.60 = 256,159.24/x
  3. Step 3: Cross multiply
    655,543.72x = 983,439.60 × 256,159.24
  4. Step 4: Simplify right side
    655,543.72x = 251,917,140,521.90
  5. Step 5: Solve for x
    x = 251,917,140,521.90/655,543.72
  6. Step 6: Final answer
    x = 384,287.32

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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.