Home / 280,426.56-386,986.65-153,102.15

Finding the Fourth Proportional to 280,426.56, 386,986.65 and 153,102.15

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Solution

The fourth proportional to 280,426.56, 386,986.65 and 153,102.15 is: 211,279.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,426.56 : 386,986.65 = 153,102.15 : x
  2. Step 2: Convert to fraction form
    280,426.56/386,986.65 = 153,102.15/x
  3. Step 3: Cross multiply
    280,426.56x = 386,986.65 × 153,102.15
  4. Step 4: Simplify right side
    280,426.56x = 59,248,488,136.30
  5. Step 5: Solve for x
    x = 59,248,488,136.30/280,426.56
  6. Step 6: Final answer
    x = 211,279.87

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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.