Home / 280,214.46-386,695.89-152,890.56

Finding the Fourth Proportional to 280,214.46, 386,695.89 and 152,890.56

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Solution

The fourth proportional to 280,214.46, 386,695.89 and 152,890.56 is: 210,988.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,214.46 : 386,695.89 = 152,890.56 : x
  2. Step 2: Convert to fraction form
    280,214.46/386,695.89 = 152,890.56/x
  3. Step 3: Cross multiply
    280,214.46x = 386,695.89 × 152,890.56
  4. Step 4: Simplify right side
    280,214.46x = 59,122,151,171.80
  5. Step 5: Solve for x
    x = 59,122,151,171.80/280,214.46
  6. Step 6: Final answer
    x = 210,988.94

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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.