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Finding the Fourth Proportional to 253,561.80, 380,342.70 and 153,834.60

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Solution

The fourth proportional to 253,561.80, 380,342.70 and 153,834.60 is: 230,751.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,561.80 : 380,342.70 = 153,834.60 : x
  2. Step 2: Convert to fraction form
    253,561.80/380,342.70 = 153,834.60/x
  3. Step 3: Cross multiply
    253,561.80x = 380,342.70 × 153,834.60
  4. Step 4: Simplify right side
    253,561.80x = 58,509,867,117.42
  5. Step 5: Solve for x
    x = 58,509,867,117.42/253,561.80
  6. Step 6: Final answer
    x = 230,751.90

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1.5x scale

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.