Home / 291,023.28-436,538.16-80,663.04

Finding the Fourth Proportional to 291,023.28, 436,538.16 and 80,663.04

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Solution

The fourth proportional to 291,023.28, 436,538.16 and 80,663.04 is: 120,995.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,023.28 : 436,538.16 = 80,663.04 : x
  2. Step 2: Convert to fraction form
    291,023.28/436,538.16 = 80,663.04/x
  3. Step 3: Cross multiply
    291,023.28x = 436,538.16 × 80,663.04
  4. Step 4: Simplify right side
    291,023.28x = 35,212,495,061.61
  5. Step 5: Solve for x
    x = 35,212,495,061.61/291,023.28
  6. Step 6: Final answer
    x = 120,995.46

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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.