Home / 274,417.28-411,621.12-74,734.40

Finding the Fourth Proportional to 274,417.28, 411,621.12 and 74,734.40

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Solution

The fourth proportional to 274,417.28, 411,621.12 and 74,734.40 is: 112,100.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,417.28 : 411,621.12 = 74,734.40 : x
  2. Step 2: Convert to fraction form
    274,417.28/411,621.12 = 74,734.40/x
  3. Step 3: Cross multiply
    274,417.28x = 411,621.12 × 74,734.40
  4. Step 4: Simplify right side
    274,417.28x = 30,762,257,430.53
  5. Step 5: Solve for x
    x = 30,762,257,430.53/274,417.28
  6. Step 6: Final answer
    x = 112,100.29

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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.