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Finding the Fourth Proportional to 243,312.12, 335,761.20 and 135,880.20

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Solution

The fourth proportional to 243,312.12, 335,761.20 and 135,880.20 is: 187,509.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,312.12 : 335,761.20 = 135,880.20 : x
  2. Step 2: Convert to fraction form
    243,312.12/335,761.20 = 135,880.20/x
  3. Step 3: Cross multiply
    243,312.12x = 335,761.20 × 135,880.20
  4. Step 4: Simplify right side
    243,312.12x = 45,623,299,008.24
  5. Step 5: Solve for x
    x = 45,623,299,008.24/243,312.12
  6. Step 6: Final answer
    x = 187,509.36

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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.