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Finding the Fourth Proportional to 339,013.52, 508,323.36 and 128,536.64

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Solution

The fourth proportional to 339,013.52, 508,323.36 and 128,536.64 is: 192,730.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,013.52 : 508,323.36 = 128,536.64 : x
  2. Step 2: Convert to fraction form
    339,013.52/508,323.36 = 128,536.64/x
  3. Step 3: Cross multiply
    339,013.52x = 508,323.36 × 128,536.64
  4. Step 4: Simplify right side
    339,013.52x = 65,338,176,727.91
  5. Step 5: Solve for x
    x = 65,338,176,727.91/339,013.52
  6. Step 6: Final answer
    x = 192,730.30

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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.