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Finding the Fourth Proportional to 208,124.86, 287,213.20 and 112,631.56

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Solution

The fourth proportional to 208,124.86, 287,213.20 and 112,631.56 is: 155,432.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,124.86 : 287,213.20 = 112,631.56 : x
  2. Step 2: Convert to fraction form
    208,124.86/287,213.20 = 112,631.56/x
  3. Step 3: Cross multiply
    208,124.86x = 287,213.20 × 112,631.56
  4. Step 4: Simplify right side
    208,124.86x = 32,349,270,768.59
  5. Step 5: Solve for x
    x = 32,349,270,768.59/208,124.86
  6. Step 6: Final answer
    x = 155,432.04

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1.5x scale

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.