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Finding the Fourth Proportional to 253,035.67, 349,189.20 and 138,314.79

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Solution

The fourth proportional to 253,035.67, 349,189.20 and 138,314.79 is: 190,874.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,035.67 : 349,189.20 = 138,314.79 : x
  2. Step 2: Convert to fraction form
    253,035.67/349,189.20 = 138,314.79/x
  3. Step 3: Cross multiply
    253,035.67x = 349,189.20 × 138,314.79
  4. Step 4: Simplify right side
    253,035.67x = 48,298,029,821.50
  5. Step 5: Solve for x
    x = 48,298,029,821.50/253,035.67
  6. Step 6: Final answer
    x = 190,874.40

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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.