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Finding the Fourth Proportional to 315,978.01, 474,304.35 and 136,152.18

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Solution

The fourth proportional to 315,978.01, 474,304.35 and 136,152.18 is: 204,373.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,978.01 : 474,304.35 = 136,152.18 : x
  2. Step 2: Convert to fraction form
    315,978.01/474,304.35 = 136,152.18/x
  3. Step 3: Cross multiply
    315,978.01x = 474,304.35 × 136,152.18
  4. Step 4: Simplify right side
    315,978.01x = 64,577,571,235.98
  5. Step 5: Solve for x
    x = 64,577,571,235.98/315,978.01
  6. Step 6: Final answer
    x = 204,373.62

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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.