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Finding the Fourth Proportional to 280,073.78, 386,535.03 and 159,233.30

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Solution

The fourth proportional to 280,073.78, 386,535.03 and 159,233.30 is: 219,760.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,073.78 : 386,535.03 = 159,233.30 : x
  2. Step 2: Convert to fraction form
    280,073.78/386,535.03 = 159,233.30/x
  3. Step 3: Cross multiply
    280,073.78x = 386,535.03 × 159,233.30
  4. Step 4: Simplify right side
    280,073.78x = 61,549,248,392.50
  5. Step 5: Solve for x
    x = 61,549,248,392.50/280,073.78
  6. Step 6: Final answer
    x = 219,760.84

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1.5x scale

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.