Home / 208,311.12-287,470.08-112,817.52

Finding the Fourth Proportional to 208,311.12, 287,470.08 and 112,817.52

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Solution

The fourth proportional to 208,311.12, 287,470.08 and 112,817.52 is: 155,688.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,311.12 : 287,470.08 = 112,817.52 : x
  2. Step 2: Convert to fraction form
    208,311.12/287,470.08 = 112,817.52/x
  3. Step 3: Cross multiply
    208,311.12x = 287,470.08 × 112,817.52
  4. Step 4: Simplify right side
    208,311.12x = 32,431,661,499.80
  5. Step 5: Solve for x
    x = 32,431,661,499.80/208,311.12
  6. Step 6: Final answer
    x = 155,688.58

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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.