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Finding the Fourth Proportional to 342,000.80, 513,001.20 and 164,416.40

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Solution

The fourth proportional to 342,000.80, 513,001.20 and 164,416.40 is: 246,624.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,000.80 : 513,001.20 = 164,416.40 : x
  2. Step 2: Convert to fraction form
    342,000.80/513,001.20 = 164,416.40/x
  3. Step 3: Cross multiply
    342,000.80x = 513,001.20 × 164,416.40
  4. Step 4: Simplify right side
    342,000.80x = 84,345,810,499.68
  5. Step 5: Solve for x
    x = 84,345,810,499.68/342,000.80
  6. Step 6: Final answer
    x = 246,624.60

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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.