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Finding the Fourth Proportional to 171,624.40, 257,455.80 and 53,294.80

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Solution

The fourth proportional to 171,624.40, 257,455.80 and 53,294.80 is: 79,948.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,624.40 : 257,455.80 = 53,294.80 : x
  2. Step 2: Convert to fraction form
    171,624.40/257,455.80 = 53,294.80/x
  3. Step 3: Cross multiply
    171,624.40x = 257,455.80 × 53,294.80
  4. Step 4: Simplify right side
    171,624.40x = 13,721,055,369.84
  5. Step 5: Solve for x
    x = 13,721,055,369.84/171,624.40
  6. Step 6: Final answer
    x = 79,948.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.