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Finding the Fourth Proportional to 354,723.65, 488,686.89 and 247,098.95

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Solution

The fourth proportional to 354,723.65, 488,686.89 and 247,098.95 is: 340,417.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,723.65 : 488,686.89 = 247,098.95 : x
  2. Step 2: Convert to fraction form
    354,723.65/488,686.89 = 247,098.95/x
  3. Step 3: Cross multiply
    354,723.65x = 488,686.89 × 247,098.95
  4. Step 4: Simplify right side
    354,723.65x = 120,754,013,718.84
  5. Step 5: Solve for x
    x = 120,754,013,718.84/354,723.65
  6. Step 6: Final answer
    x = 340,417.15

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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.