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Finding the Fourth Proportional to 316,485.60, 474,957.12 and 124,388.64

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Solution

The fourth proportional to 316,485.60, 474,957.12 and 124,388.64 is: 186,672.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,485.60 : 474,957.12 = 124,388.64 : x
  2. Step 2: Convert to fraction form
    316,485.60/474,957.12 = 124,388.64/x
  3. Step 3: Cross multiply
    316,485.60x = 474,957.12 × 124,388.64
  4. Step 4: Simplify right side
    316,485.60x = 59,079,270,215.12
  5. Step 5: Solve for x
    x = 59,079,270,215.12/316,485.60
  6. Step 6: Final answer
    x = 186,672.85

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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.