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Finding the Fourth Proportional to 495,169.39, 683,339.25 and 280,304.74

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Solution

The fourth proportional to 495,169.39, 683,339.25 and 280,304.74 is: 386,823.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,169.39 : 683,339.25 = 280,304.74 : x
  2. Step 2: Convert to fraction form
    495,169.39/683,339.25 = 280,304.74/x
  3. Step 3: Cross multiply
    495,169.39x = 683,339.25 × 280,304.74
  4. Step 4: Simplify right side
    495,169.39x = 191,543,230,803.05
  5. Step 5: Solve for x
    x = 191,543,230,803.05/495,169.39
  6. Step 6: Final answer
    x = 386,823.65

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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.