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Finding the Fourth Proportional to 328,887.20, 493,330.80 and 118,546.40

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Solution

The fourth proportional to 328,887.20, 493,330.80 and 118,546.40 is: 177,819.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,887.20 : 493,330.80 = 118,546.40 : x
  2. Step 2: Convert to fraction form
    328,887.20/493,330.80 = 118,546.40/x
  3. Step 3: Cross multiply
    328,887.20x = 493,330.80 × 118,546.40
  4. Step 4: Simplify right side
    328,887.20x = 58,482,590,349.12
  5. Step 5: Solve for x
    x = 58,482,590,349.12/328,887.20
  6. Step 6: Final answer
    x = 177,819.60

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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.