Home / 280,600.20-387,227.34-153,275.76

Finding the Fourth Proportional to 280,600.20, 387,227.34 and 153,275.76

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Solution

The fourth proportional to 280,600.20, 387,227.34 and 153,275.76 is: 211,520.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,600.20 : 387,227.34 = 153,275.76 : x
  2. Step 2: Convert to fraction form
    280,600.20/387,227.34 = 153,275.76/x
  3. Step 3: Cross multiply
    280,600.20x = 387,227.34 × 153,275.76
  4. Step 4: Simplify right side
    280,600.20x = 59,352,564,831.28
  5. Step 5: Solve for x
    x = 59,352,564,831.28/280,600.20
  6. Step 6: Final answer
    x = 211,520.04

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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.