Home / 280,700.24-387,371.40-153,381.20

Finding the Fourth Proportional to 280,700.24, 387,371.40 and 153,381.20

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Solution

The fourth proportional to 280,700.24, 387,371.40 and 153,381.20 is: 211,668.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,700.24 : 387,371.40 = 153,381.20 : x
  2. Step 2: Convert to fraction form
    280,700.24/387,371.40 = 153,381.20/x
  3. Step 3: Cross multiply
    280,700.24x = 387,371.40 × 153,381.20
  4. Step 4: Simplify right side
    280,700.24x = 59,415,490,177.68
  5. Step 5: Solve for x
    x = 59,415,490,177.68/280,700.24
  6. Step 6: Final answer
    x = 211,668.83

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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.