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Finding the Fourth Proportional to 243,313.20, 364,969.80 and 125,215.20

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Solution

The fourth proportional to 243,313.20, 364,969.80 and 125,215.20 is: 187,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,313.20 : 364,969.80 = 125,215.20 : x
  2. Step 2: Convert to fraction form
    243,313.20/364,969.80 = 125,215.20/x
  3. Step 3: Cross multiply
    243,313.20x = 364,969.80 × 125,215.20
  4. Step 4: Simplify right side
    243,313.20x = 45,699,766,500.96
  5. Step 5: Solve for x
    x = 45,699,766,500.96/243,313.20
  6. Step 6: Final answer
    x = 187,822.80

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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.