Home / 288,921.20-433,380.56-78,558.53

Finding the Fourth Proportional to 288,921.20, 433,380.56 and 78,558.53

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Solution

The fourth proportional to 288,921.20, 433,380.56 and 78,558.53 is: 117,837.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,921.20 : 433,380.56 = 78,558.53 : x
  2. Step 2: Convert to fraction form
    288,921.20/433,380.56 = 78,558.53/x
  3. Step 3: Cross multiply
    288,921.20x = 433,380.56 × 78,558.53
  4. Step 4: Simplify right side
    288,921.20x = 34,045,737,164.48
  5. Step 5: Solve for x
    x = 34,045,737,164.48/288,921.20
  6. Step 6: Final answer
    x = 117,837.45

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1.5x scale

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.