Home / 280,535,437.52-387,105,375.24-155,070,685.04

Finding the Fourth Proportional to 280,535,437.52, 387,105,375.24 and 155,070,685.04

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Solution

The fourth proportional to 280,535,437.52, 387,105,375.24 and 155,070,685.04 is: 213,979,011.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,535,437.52 : 387,105,375.24 = 155,070,685.04 : x
  2. Step 2: Convert to fraction form
    280,535,437.52/387,105,375.24 = 155,070,685.04/x
  3. Step 3: Cross multiply
    280,535,437.52x = 387,105,375.24 × 155,070,685.04
  4. Step 4: Simplify right side
    280,535,437.52x = 60,028,695,721,133,056
  5. Step 5: Solve for x
    x = 60,028,695,721,133,056/280,535,437.52
  6. Step 6: Final answer
    x = 213,979,011.89

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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.