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Finding the Fourth Proportional to 215,699.70, 323,306.55 and 103,433.70

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Solution

The fourth proportional to 215,699.70, 323,306.55 and 103,433.70 is: 155,034.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,699.70 : 323,306.55 = 103,433.70 : x
  2. Step 2: Convert to fraction form
    215,699.70/323,306.55 = 103,433.70/x
  3. Step 3: Cross multiply
    215,699.70x = 323,306.55 × 103,433.70
  4. Step 4: Simplify right side
    215,699.70x = 33,440,792,700.74
  5. Step 5: Solve for x
    x = 33,440,792,700.74/215,699.70
  6. Step 6: Final answer
    x = 155,034.03

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1.5x scale

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.