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Finding the Fourth Proportional to 495,688.98, 743,572.86 and 211,381.95

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Solution

The fourth proportional to 495,688.98, 743,572.86 and 211,381.95 is: 317,089.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,688.98 : 743,572.86 = 211,381.95 : x
  2. Step 2: Convert to fraction form
    495,688.98/743,572.86 = 211,381.95/x
  3. Step 3: Cross multiply
    495,688.98x = 743,572.86 × 211,381.95
  4. Step 4: Simplify right side
    495,688.98x = 157,177,881,113.88
  5. Step 5: Solve for x
    x = 157,177,881,113.88/495,688.98
  6. Step 6: Final answer
    x = 317,089.72

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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.