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Finding the Fourth Proportional to 398,143.60, 595,812.70 and 248,454.32

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Solution

The fourth proportional to 398,143.60, 595,812.70 and 248,454.32 is: 371,806.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,143.60 : 595,812.70 = 248,454.32 : x
  2. Step 2: Convert to fraction form
    398,143.60/595,812.70 = 248,454.32/x
  3. Step 3: Cross multiply
    398,143.60x = 595,812.70 × 248,454.32
  4. Step 4: Simplify right side
    398,143.60x = 148,032,239,225.86
  5. Step 5: Solve for x
    x = 148,032,239,225.86/398,143.60
  6. Step 6: Final answer
    x = 371,806.15

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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.