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Finding the Fourth Proportional to 315,334.80, 473,002.20 and 149,446.80

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Solution

The fourth proportional to 315,334.80, 473,002.20 and 149,446.80 is: 224,170.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,334.80 : 473,002.20 = 149,446.80 : x
  2. Step 2: Convert to fraction form
    315,334.80/473,002.20 = 149,446.80/x
  3. Step 3: Cross multiply
    315,334.80x = 473,002.20 × 149,446.80
  4. Step 4: Simplify right side
    315,334.80x = 70,688,665,182.96
  5. Step 5: Solve for x
    x = 70,688,665,182.96/315,334.80
  6. Step 6: Final answer
    x = 224,170.20

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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.