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Finding the Fourth Proportional to 486,247.83, 671,377.61 and 314,267.61

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Solution

The fourth proportional to 486,247.83, 671,377.61 and 314,267.61 is: 433,919.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,247.83 : 671,377.61 = 314,267.61 : x
  2. Step 2: Convert to fraction form
    486,247.83/671,377.61 = 314,267.61/x
  3. Step 3: Cross multiply
    486,247.83x = 671,377.61 × 314,267.61
  4. Step 4: Simplify right side
    486,247.83x = 210,992,235,330.87
  5. Step 5: Solve for x
    x = 210,992,235,330.87/486,247.83
  6. Step 6: Final answer
    x = 433,919.13

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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.