Home / 423,100.87-583,965.14-287,178.61

Finding the Fourth Proportional to 423,100.87, 583,965.14 and 287,178.61

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Solution

The fourth proportional to 423,100.87, 583,965.14 and 287,178.61 is: 396,364.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,100.87 : 583,965.14 = 287,178.61 : x
  2. Step 2: Convert to fraction form
    423,100.87/583,965.14 = 287,178.61/x
  3. Step 3: Cross multiply
    423,100.87x = 583,965.14 × 287,178.61
  4. Step 4: Simplify right side
    423,100.87x = 167,702,297,193.66
  5. Step 5: Solve for x
    x = 167,702,297,193.66/423,100.87
  6. Step 6: Final answer
    x = 396,364.81

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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.