Home / 356,639.12-534,873.80-143,407.54

Finding the Fourth Proportional to 356,639.12, 534,873.80 and 143,407.54

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Solution

The fourth proportional to 356,639.12, 534,873.80 and 143,407.54 is: 215,077.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,639.12 : 534,873.80 = 143,407.54 : x
  2. Step 2: Convert to fraction form
    356,639.12/534,873.80 = 143,407.54/x
  3. Step 3: Cross multiply
    356,639.12x = 534,873.80 × 143,407.54
  4. Step 4: Simplify right side
    356,639.12x = 76,704,935,868.45
  5. Step 5: Solve for x
    x = 76,704,935,868.45/356,639.12
  6. Step 6: Final answer
    x = 215,077.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.