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Finding the Fourth Proportional to 393,068.36, 542,276.84 and 247,826.39

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Solution

The fourth proportional to 393,068.36, 542,276.84 and 247,826.39 is: 341,901.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,068.36 : 542,276.84 = 247,826.39 : x
  2. Step 2: Convert to fraction form
    393,068.36/542,276.84 = 247,826.39/x
  3. Step 3: Cross multiply
    393,068.36x = 542,276.84 × 247,826.39
  4. Step 4: Simplify right side
    393,068.36x = 134,390,509,545.99
  5. Step 5: Solve for x
    x = 134,390,509,545.99/393,068.36
  6. Step 6: Final answer
    x = 341,901.11

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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.