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Finding the Fourth Proportional to 168,199,840.40, 251,732,890.20 and 168,199,840.40

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Solution

The fourth proportional to 168,199,840.40, 251,732,890.20 and 168,199,840.40 is: 251,732,890.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,199,840.40 : 251,732,890.20 = 168,199,840.40 : x
  2. Step 2: Convert to fraction form
    168,199,840.40/251,732,890.20 = 168,199,840.40/x
  3. Step 3: Cross multiply
    168,199,840.40x = 251,732,890.20 × 168,199,840.40
  4. Step 4: Simplify right side
    168,199,840.40x = 42,341,431,955,070,720
  5. Step 5: Solve for x
    x = 42,341,431,955,070,720/168,199,840.40
  6. Step 6: Final answer
    x = 251,732,890.20

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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.