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Finding the Fourth Proportional to 348,820.80, 523,231.20 and 138,350.40

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Solution

The fourth proportional to 348,820.80, 523,231.20 and 138,350.40 is: 207,525.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,820.80 : 523,231.20 = 138,350.40 : x
  2. Step 2: Convert to fraction form
    348,820.80/523,231.20 = 138,350.40/x
  3. Step 3: Cross multiply
    348,820.80x = 523,231.20 × 138,350.40
  4. Step 4: Simplify right side
    348,820.80x = 72,389,245,812.48
  5. Step 5: Solve for x
    x = 72,389,245,812.48/348,820.80
  6. Step 6: Final answer
    x = 207,525.60

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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.