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Finding the Fourth Proportional to 252,420.50, 348,344.55 and 137,699.19

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Solution

The fourth proportional to 252,420.50, 348,344.55 and 137,699.19 is: 190,027.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,420.50 : 348,344.55 = 137,699.19 : x
  2. Step 2: Convert to fraction form
    252,420.50/348,344.55 = 137,699.19/x
  3. Step 3: Cross multiply
    252,420.50x = 348,344.55 × 137,699.19
  4. Step 4: Simplify right side
    252,420.50x = 47,966,762,375.91
  5. Step 5: Solve for x
    x = 47,966,762,375.91/252,420.50
  6. Step 6: Final answer
    x = 190,027.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.