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Finding the Fourth Proportional to 217,503.80, 300,260.76 and 145,857.68

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Solution

The fourth proportional to 217,503.80, 300,260.76 and 145,857.68 is: 201,354.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,503.80 : 300,260.76 = 145,857.68 : x
  2. Step 2: Convert to fraction form
    217,503.80/300,260.76 = 145,857.68/x
  3. Step 3: Cross multiply
    217,503.80x = 300,260.76 × 145,857.68
  4. Step 4: Simplify right side
    217,503.80x = 43,795,337,848.64
  5. Step 5: Solve for x
    x = 43,795,337,848.64/217,503.80
  6. Step 6: Final answer
    x = 201,354.36

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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.