Home / 145,428.40-218,155.04-40,247.20

Finding the Fourth Proportional to 145,428.40, 218,155.04 and 40,247.20

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Solution

The fourth proportional to 145,428.40, 218,155.04 and 40,247.20 is: 60,374.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,428.40 : 218,155.04 = 40,247.20 : x
  2. Step 2: Convert to fraction form
    145,428.40/218,155.04 = 40,247.20/x
  3. Step 3: Cross multiply
    145,428.40x = 218,155.04 × 40,247.20
  4. Step 4: Simplify right side
    145,428.40x = 8,780,129,525.89
  5. Step 5: Solve for x
    x = 8,780,129,525.89/145,428.40
  6. Step 6: Final answer
    x = 60,374.24

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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.