Home / 257,715.66-386,480.86-89,190.24

Finding the Fourth Proportional to 257,715.66, 386,480.86 and 89,190.24

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Solution

The fourth proportional to 257,715.66, 386,480.86 and 89,190.24 is: 133,753.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,715.66 : 386,480.86 = 89,190.24 : x
  2. Step 2: Convert to fraction form
    257,715.66/386,480.86 = 89,190.24/x
  3. Step 3: Cross multiply
    257,715.66x = 386,480.86 × 89,190.24
  4. Step 4: Simplify right side
    257,715.66x = 34,470,320,658.81
  5. Step 5: Solve for x
    x = 34,470,320,658.81/257,715.66
  6. Step 6: Final answer
    x = 133,753.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.