Home / 280,572.20-387,187.08-153,247.76

Finding the Fourth Proportional to 280,572.20, 387,187.08 and 153,247.76

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Solution

The fourth proportional to 280,572.20, 387,187.08 and 153,247.76 is: 211,480.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,572.20 : 387,187.08 = 153,247.76 : x
  2. Step 2: Convert to fraction form
    280,572.20/387,187.08 = 153,247.76/x
  3. Step 3: Cross multiply
    280,572.20x = 387,187.08 × 153,247.76
  4. Step 4: Simplify right side
    280,572.20x = 59,335,552,710.94
  5. Step 5: Solve for x
    x = 59,335,552,710.94/280,572.20
  6. Step 6: Final answer
    x = 211,480.51

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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.