Home / 280,135.47-420,326.55-146,983.62

Finding the Fourth Proportional to 280,135.47, 420,326.55 and 146,983.62

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Solution

The fourth proportional to 280,135.47, 420,326.55 and 146,983.62 is: 220,540.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,135.47 : 420,326.55 = 146,983.62 : x
  2. Step 2: Convert to fraction form
    280,135.47/420,326.55 = 146,983.62/x
  3. Step 3: Cross multiply
    280,135.47x = 420,326.55 × 146,983.62
  4. Step 4: Simplify right side
    280,135.47x = 61,781,117,901.11
  5. Step 5: Solve for x
    x = 61,781,117,901.11/280,135.47
  6. Step 6: Final answer
    x = 220,540.15

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1.5x scale

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.