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Finding the Fourth Proportional to 402,357.20, 603,616.80 and 118,047.20

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Solution

The fourth proportional to 402,357.20, 603,616.80 and 118,047.20 is: 177,094.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,357.20 : 603,616.80 = 118,047.20 : x
  2. Step 2: Convert to fraction form
    402,357.20/603,616.80 = 118,047.20/x
  3. Step 3: Cross multiply
    402,357.20x = 603,616.80 × 118,047.20
  4. Step 4: Simplify right side
    402,357.20x = 71,255,273,112.96
  5. Step 5: Solve for x
    x = 71,255,273,112.96/402,357.20
  6. Step 6: Final answer
    x = 177,094.56

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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.