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Finding the Fourth Proportional to 495,595.80, 683,930.70 and 280,730.52

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Solution

The fourth proportional to 495,595.80, 683,930.70 and 280,730.52 is: 387,412.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,595.80 : 683,930.70 = 280,730.52 : x
  2. Step 2: Convert to fraction form
    495,595.80/683,930.70 = 280,730.52/x
  3. Step 3: Cross multiply
    495,595.80x = 683,930.70 × 280,730.52
  4. Step 4: Simplify right side
    495,595.80x = 192,000,221,054.96
  5. Step 5: Solve for x
    x = 192,000,221,054.96/495,595.80
  6. Step 6: Final answer
    x = 387,412.93

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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.