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Finding the Fourth Proportional to 423,793.15, 584,988.08 and 280,599.32

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Solution

The fourth proportional to 423,793.15, 584,988.08 and 280,599.32 is: 387,328.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,793.15 : 584,988.08 = 280,599.32 : x
  2. Step 2: Convert to fraction form
    423,793.15/584,988.08 = 280,599.32/x
  3. Step 3: Cross multiply
    423,793.15x = 584,988.08 × 280,599.32
  4. Step 4: Simplify right side
    423,793.15x = 164,147,257,515.58
  5. Step 5: Solve for x
    x = 164,147,257,515.58/423,793.15
  6. Step 6: Final answer
    x = 387,328.72

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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.