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Finding the Fourth Proportional to 339,011.52, 508,320.36 and 128,534.64

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Solution

The fourth proportional to 339,011.52, 508,320.36 and 128,534.64 is: 192,727.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,011.52 : 508,320.36 = 128,534.64 : x
  2. Step 2: Convert to fraction form
    339,011.52/508,320.36 = 128,534.64/x
  3. Step 3: Cross multiply
    339,011.52x = 508,320.36 × 128,534.64
  4. Step 4: Simplify right side
    339,011.52x = 65,336,774,477.27
  5. Step 5: Solve for x
    x = 65,336,774,477.27/339,011.52
  6. Step 6: Final answer
    x = 192,727.30

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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.