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Finding the Fourth Proportional to 243,108.60, 335,481.12 and 152,513.36

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Solution

The fourth proportional to 243,108.60, 335,481.12 and 152,513.36 is: 210,462.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,108.60 : 335,481.12 = 152,513.36 : x
  2. Step 2: Convert to fraction form
    243,108.60/335,481.12 = 152,513.36/x
  3. Step 3: Cross multiply
    243,108.60x = 335,481.12 × 152,513.36
  4. Step 4: Simplify right side
    243,108.60x = 51,165,352,827.76
  5. Step 5: Solve for x
    x = 51,165,352,827.76/243,108.60
  6. Step 6: Final answer
    x = 210,462.95

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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.