Home / 280,572.42-386,689.23-212,426.12

Finding the Fourth Proportional to 280,572.42, 386,689.23 and 212,426.12

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Solution

The fourth proportional to 280,572.42, 386,689.23 and 212,426.12 is: 292,768.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,572.42 : 386,689.23 = 212,426.12 : x
  2. Step 2: Convert to fraction form
    280,572.42/386,689.23 = 212,426.12/x
  3. Step 3: Cross multiply
    280,572.42x = 386,689.23 × 212,426.12
  4. Step 4: Simplify right side
    280,572.42x = 82,142,890,841.24
  5. Step 5: Solve for x
    x = 82,142,890,841.24/280,572.42
  6. Step 6: Final answer
    x = 292,768.94

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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.