Home / 276,988.34-415,482.55-87,581.66

Finding the Fourth Proportional to 276,988.34, 415,482.55 and 87,581.66

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Solution

The fourth proportional to 276,988.34, 415,482.55 and 87,581.66 is: 131,372.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,988.34 : 415,482.55 = 87,581.66 : x
  2. Step 2: Convert to fraction form
    276,988.34/415,482.55 = 87,581.66/x
  3. Step 3: Cross multiply
    276,988.34x = 415,482.55 × 87,581.66
  4. Step 4: Simplify right side
    276,988.34x = 36,388,649,133.67
  5. Step 5: Solve for x
    x = 36,388,649,133.67/276,988.34
  6. Step 6: Final answer
    x = 131,372.49

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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.