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Finding the Fourth Proportional to 208,341.20, 287,510.87 and 112,847.92

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Solution

The fourth proportional to 208,341.20, 287,510.87 and 112,847.92 is: 155,730.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,341.20 : 287,510.87 = 112,847.92 : x
  2. Step 2: Convert to fraction form
    208,341.20/287,510.87 = 112,847.92/x
  3. Step 3: Cross multiply
    208,341.20x = 287,510.87 × 112,847.92
  4. Step 4: Simplify right side
    208,341.20x = 32,445,003,092.65
  5. Step 5: Solve for x
    x = 32,445,003,092.65/208,341.20
  6. Step 6: Final answer
    x = 155,730.14

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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.