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Finding the Fourth Proportional to 208,023.30, 312,034.95 and 155,535.30

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Solution

The fourth proportional to 208,023.30, 312,034.95 and 155,535.30 is: 233,302.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,023.30 : 312,034.95 = 155,535.30 : x
  2. Step 2: Convert to fraction form
    208,023.30/312,034.95 = 155,535.30/x
  3. Step 3: Cross multiply
    208,023.30x = 312,034.95 × 155,535.30
  4. Step 4: Simplify right side
    208,023.30x = 48,532,449,558.74
  5. Step 5: Solve for x
    x = 48,532,449,558.74/208,023.30
  6. Step 6: Final answer
    x = 233,302.95

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Similar ratio
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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.