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Finding the Fourth Proportional to 389,787.93, 584,702.51 and 123,569.21

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Solution

The fourth proportional to 389,787.93, 584,702.51 and 123,569.21 is: 185,360.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,787.93 : 584,702.51 = 123,569.21 : x
  2. Step 2: Convert to fraction form
    389,787.93/584,702.51 = 123,569.21/x
  3. Step 3: Cross multiply
    389,787.93x = 584,702.51 × 123,569.21
  4. Step 4: Simplify right side
    389,787.93x = 72,251,223,704.36
  5. Step 5: Solve for x
    x = 72,251,223,704.36/389,787.93
  6. Step 6: Final answer
    x = 185,360.34

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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.