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Finding the Fourth Proportional to 243,481.70, 335,855.64 and 157,300.92

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Solution

The fourth proportional to 243,481.70, 335,855.64 and 157,300.92 is: 216,978.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,481.70 : 335,855.64 = 157,300.92 : x
  2. Step 2: Convert to fraction form
    243,481.70/335,855.64 = 157,300.92/x
  3. Step 3: Cross multiply
    243,481.70x = 335,855.64 × 157,300.92
  4. Step 4: Simplify right side
    243,481.70x = 52,830,401,159.19
  5. Step 5: Solve for x
    x = 52,830,401,159.19/243,481.70
  6. Step 6: Final answer
    x = 216,978.94

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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.