Home / 215,030.15-322,549.67-78,248.57

Finding the Fourth Proportional to 215,030.15, 322,549.67 and 78,248.57

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Solution

The fourth proportional to 215,030.15, 322,549.67 and 78,248.57 is: 117,374.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,030.15 : 322,549.67 = 78,248.57 : x
  2. Step 2: Convert to fraction form
    215,030.15/322,549.67 = 78,248.57/x
  3. Step 3: Cross multiply
    215,030.15x = 322,549.67 × 78,248.57
  4. Step 4: Simplify right side
    215,030.15x = 25,239,050,431.47
  5. Step 5: Solve for x
    x = 25,239,050,431.47/215,030.15
  6. Step 6: Final answer
    x = 117,374.47

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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.