Home / 208,278.86-287,426.16-112,785.56

Finding the Fourth Proportional to 208,278.86, 287,426.16 and 112,785.56

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Solution

The fourth proportional to 208,278.86, 287,426.16 and 112,785.56 is: 155,644.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,278.86 : 287,426.16 = 112,785.56 : x
  2. Step 2: Convert to fraction form
    208,278.86/287,426.16 = 112,785.56/x
  3. Step 3: Cross multiply
    208,278.86x = 287,426.16 × 112,785.56
  4. Step 4: Simplify right side
    208,278.86x = 32,417,520,414.25
  5. Step 5: Solve for x
    x = 32,417,520,414.25/208,278.86
  6. Step 6: Final answer
    x = 155,644.79

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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.