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Finding the Fourth Proportional to 217,599.48, 300,210.30 and 142,191.72

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Solution

The fourth proportional to 217,599.48, 300,210.30 and 142,191.72 is: 196,174.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,599.48 : 300,210.30 = 142,191.72 : x
  2. Step 2: Convert to fraction form
    217,599.48/300,210.30 = 142,191.72/x
  3. Step 3: Cross multiply
    217,599.48x = 300,210.30 × 142,191.72
  4. Step 4: Simplify right side
    217,599.48x = 42,687,418,918.72
  5. Step 5: Solve for x
    x = 42,687,418,918.72/217,599.48
  6. Step 6: Final answer
    x = 196,174.27

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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.