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Finding the Fourth Proportional to 328,562.76, 492,897.24 and 128,774.76

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Solution

The fourth proportional to 328,562.76, 492,897.24 and 128,774.76 is: 193,182.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,562.76 : 492,897.24 = 128,774.76 : x
  2. Step 2: Convert to fraction form
    328,562.76/492,897.24 = 128,774.76/x
  3. Step 3: Cross multiply
    328,562.76x = 492,897.24 × 128,774.76
  4. Step 4: Simplify right side
    328,562.76x = 63,472,723,785.66
  5. Step 5: Solve for x
    x = 63,472,723,785.66/328,562.76
  6. Step 6: Final answer
    x = 193,182.95

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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.