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Finding the Fourth Proportional to 280,600.40, 387,214.12 and 153,251.39

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Solution

The fourth proportional to 280,600.40, 387,214.12 and 153,251.39 is: 211,479.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,600.40 : 387,214.12 = 153,251.39 : x
  2. Step 2: Convert to fraction form
    280,600.40/387,214.12 = 153,251.39/x
  3. Step 3: Cross multiply
    280,600.40x = 387,214.12 × 153,251.39
  4. Step 4: Simplify right side
    280,600.40x = 59,341,103,277.23
  5. Step 5: Solve for x
    x = 59,341,103,277.23/280,600.40
  6. Step 6: Final answer
    x = 211,479.04

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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.