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Finding the Fourth Proportional to 243,816.48, 335,719.08 and 213,431.76

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Solution

The fourth proportional to 243,816.48, 335,719.08 and 213,431.76 is: 293,881.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,816.48 : 335,719.08 = 213,431.76 : x
  2. Step 2: Convert to fraction form
    243,816.48/335,719.08 = 213,431.76/x
  3. Step 3: Cross multiply
    243,816.48x = 335,719.08 × 213,431.76
  4. Step 4: Simplify right side
    243,816.48x = 71,653,114,109.98
  5. Step 5: Solve for x
    x = 71,653,114,109.98/243,816.48
  6. Step 6: Final answer
    x = 293,881.34

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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.