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Finding the Fourth Proportional to 423,771.40, 584,639.71 and 239,967.77

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Solution

The fourth proportional to 423,771.40, 584,639.71 and 239,967.77 is: 331,062.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,771.40 : 584,639.71 = 239,967.77 : x
  2. Step 2: Convert to fraction form
    423,771.40/584,639.71 = 239,967.77/x
  3. Step 3: Cross multiply
    423,771.40x = 584,639.71 × 239,967.77
  4. Step 4: Simplify right side
    423,771.40x = 140,294,687,462.15
  5. Step 5: Solve for x
    x = 140,294,687,462.15/423,771.40
  6. Step 6: Final answer
    x = 331,062.19

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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.