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Finding the Fourth Proportional to 279,725.52, 386,019.08 and 152,400.72

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Solution

The fourth proportional to 279,725.52, 386,019.08 and 152,400.72 is: 210,311.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,725.52 : 386,019.08 = 152,400.72 : x
  2. Step 2: Convert to fraction form
    279,725.52/386,019.08 = 152,400.72/x
  3. Step 3: Cross multiply
    279,725.52x = 386,019.08 × 152,400.72
  4. Step 4: Simplify right side
    279,725.52x = 58,829,585,725.74
  5. Step 5: Solve for x
    x = 58,829,585,725.74/279,725.52
  6. Step 6: Final answer
    x = 210,311.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.