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Finding the Fourth Proportional to 402,656.16, 603,984.37 and 118,346.76

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Solution

The fourth proportional to 402,656.16, 603,984.37 and 118,346.76 is: 177,520.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,656.16 : 603,984.37 = 118,346.76 : x
  2. Step 2: Convert to fraction form
    402,656.16/603,984.37 = 118,346.76/x
  3. Step 3: Cross multiply
    402,656.16x = 603,984.37 × 118,346.76
  4. Step 4: Simplify right side
    402,656.16x = 71,479,592,984.27
  5. Step 5: Solve for x
    x = 71,479,592,984.27/402,656.16
  6. Step 6: Final answer
    x = 177,520.18

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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.