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Finding the Fourth Proportional to 419,662.57, 579,116.19 and 238,373.92

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Solution

The fourth proportional to 419,662.57, 579,116.19 and 238,373.92 is: 328,945.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,662.57 : 579,116.19 = 238,373.92 : x
  2. Step 2: Convert to fraction form
    419,662.57/579,116.19 = 238,373.92/x
  3. Step 3: Cross multiply
    419,662.57x = 579,116.19 × 238,373.92
  4. Step 4: Simplify right side
    419,662.57x = 138,046,196,345.77
  5. Step 5: Solve for x
    x = 138,046,196,345.77/419,662.57
  6. Step 6: Final answer
    x = 328,945.70

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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.