Home / 208,278.54-287,424.32-112,785.21

Finding the Fourth Proportional to 208,278.54, 287,424.32 and 112,785.21

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Solution

The fourth proportional to 208,278.54, 287,424.32 and 112,785.21 is: 155,643.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,278.54 : 287,424.32 = 112,785.21 : x
  2. Step 2: Convert to fraction form
    208,278.54/287,424.32 = 112,785.21/x
  3. Step 3: Cross multiply
    208,278.54x = 287,424.32 × 112,785.21
  4. Step 4: Simplify right side
    208,278.54x = 32,417,211,726.38
  5. Step 5: Solve for x
    x = 32,417,211,726.38/208,278.54
  6. Step 6: Final answer
    x = 155,643.55

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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.