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Finding the Fourth Proportional to 171,526.40, 257,289.60 and 53,209.70

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Solution

The fourth proportional to 171,526.40, 257,289.60 and 53,209.70 is: 79,814.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,526.40 : 257,289.60 = 53,209.70 : x
  2. Step 2: Convert to fraction form
    171,526.40/257,289.60 = 53,209.70/x
  3. Step 3: Cross multiply
    171,526.40x = 257,289.60 × 53,209.70
  4. Step 4: Simplify right side
    171,526.40x = 13,690,302,429.12
  5. Step 5: Solve for x
    x = 13,690,302,429.12/171,526.40
  6. Step 6: Final answer
    x = 79,814.55

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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.