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Finding the Fourth Proportional to 485,957.84, 728,941.56 and 170,422.32

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Solution

The fourth proportional to 485,957.84, 728,941.56 and 170,422.32 is: 255,635.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,957.84 : 728,941.56 = 170,422.32 : x
  2. Step 2: Convert to fraction form
    485,957.84/728,941.56 = 170,422.32/x
  3. Step 3: Cross multiply
    485,957.84x = 728,941.56 × 170,422.32
  4. Step 4: Simplify right side
    485,957.84x = 124,227,911,799.62
  5. Step 5: Solve for x
    x = 124,227,911,799.62/485,957.84
  6. Step 6: Final answer
    x = 255,635.16

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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.