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Finding the Fourth Proportional to 328,867.60, 493,416.60 and 118,512.40

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Solution

The fourth proportional to 328,867.60, 493,416.60 and 118,512.40 is: 177,810.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,867.60 : 493,416.60 = 118,512.40 : x
  2. Step 2: Convert to fraction form
    328,867.60/493,416.60 = 118,512.40/x
  3. Step 3: Cross multiply
    328,867.60x = 493,416.60 × 118,512.40
  4. Step 4: Simplify right side
    328,867.60x = 58,475,985,465.84
  5. Step 5: Solve for x
    x = 58,475,985,465.84/328,867.60
  6. Step 6: Final answer
    x = 177,810.11

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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.