Home / 388,789.68-536,629.84-253,162.16

Finding the Fourth Proportional to 388,789.68, 536,629.84 and 253,162.16

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Solution

The fourth proportional to 388,789.68, 536,629.84 and 253,162.16 is: 349,428.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,789.68 : 536,629.84 = 253,162.16 : x
  2. Step 2: Convert to fraction form
    388,789.68/536,629.84 = 253,162.16/x
  3. Step 3: Cross multiply
    388,789.68x = 536,629.84 × 253,162.16
  4. Step 4: Simplify right side
    388,789.68x = 135,854,369,414.85
  5. Step 5: Solve for x
    x = 135,854,369,414.85/388,789.68
  6. Step 6: Final answer
    x = 349,428.95

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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.