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Finding the Fourth Proportional to 342,650.40, 513,992.49 and 89,931.61

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Solution

The fourth proportional to 342,650.40, 513,992.49 and 89,931.61 is: 134,901.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,650.40 : 513,992.49 = 89,931.61 : x
  2. Step 2: Convert to fraction form
    342,650.40/513,992.49 = 89,931.61/x
  3. Step 3: Cross multiply
    342,650.40x = 513,992.49 × 89,931.61
  4. Step 4: Simplify right side
    342,650.40x = 46,224,172,153.61
  5. Step 5: Solve for x
    x = 46,224,172,153.61/342,650.40
  6. Step 6: Final answer
    x = 134,901.85

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.