Home / 280,919.42-387,666.15-153,593.66

Finding the Fourth Proportional to 280,919.42, 387,666.15 and 153,593.66

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Solution

The fourth proportional to 280,919.42, 387,666.15 and 153,593.66 is: 211,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,919.42 : 387,666.15 = 153,593.66 : x
  2. Step 2: Convert to fraction form
    280,919.42/387,666.15 = 153,593.66/x
  3. Step 3: Cross multiply
    280,919.42x = 387,666.15 × 153,593.66
  4. Step 4: Simplify right side
    280,919.42x = 59,543,062,836.61
  5. Step 5: Solve for x
    x = 59,543,062,836.61/280,919.42
  6. Step 6: Final answer
    x = 211,957.80

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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.