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Finding the Fourth Proportional to 243,200.80, 335,620.43 and 134,312.49

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Solution

The fourth proportional to 243,200.80, 335,620.43 and 134,312.49 is: 185,353.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,200.80 : 335,620.43 = 134,312.49 : x
  2. Step 2: Convert to fraction form
    243,200.80/335,620.43 = 134,312.49/x
  3. Step 3: Cross multiply
    243,200.80x = 335,620.43 × 134,312.49
  4. Step 4: Simplify right side
    243,200.80x = 45,078,014,111.71
  5. Step 5: Solve for x
    x = 45,078,014,111.71/243,200.80
  6. Step 6: Final answer
    x = 185,353.06

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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.