Home / 280,824.75-387,538.16-153,500.85

Finding the Fourth Proportional to 280,824.75, 387,538.16 and 153,500.85

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Solution

The fourth proportional to 280,824.75, 387,538.16 and 153,500.85 is: 211,831.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,824.75 : 387,538.16 = 153,500.85 : x
  2. Step 2: Convert to fraction form
    280,824.75/387,538.16 = 153,500.85/x
  3. Step 3: Cross multiply
    280,824.75x = 387,538.16 × 153,500.85
  4. Step 4: Simplify right side
    280,824.75x = 59,487,436,199.93
  5. Step 5: Solve for x
    x = 59,487,436,199.93/280,824.75
  6. Step 6: Final answer
    x = 211,831.17

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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.