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Finding the Fourth Proportional to 608,557.20, 912,641.40 and 253,485.60

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Solution

The fourth proportional to 608,557.20, 912,641.40 and 253,485.60 is: 380,147.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,557.20 : 912,641.40 = 253,485.60 : x
  2. Step 2: Convert to fraction form
    608,557.20/912,641.40 = 253,485.60/x
  3. Step 3: Cross multiply
    608,557.20x = 912,641.40 × 253,485.60
  4. Step 4: Simplify right side
    608,557.20x = 231,341,452,863.84
  5. Step 5: Solve for x
    x = 231,341,452,863.84/608,557.20
  6. Step 6: Final answer
    x = 380,147.43

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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.