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Finding the Fourth Proportional to 266,117,999.60, 399,176,999.40 and 163,549,449.20

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Solution

The fourth proportional to 266,117,999.60, 399,176,999.40 and 163,549,449.20 is: 245,324,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,117,999.60 : 399,176,999.40 = 163,549,449.20 : x
  2. Step 2: Convert to fraction form
    266,117,999.60/399,176,999.40 = 163,549,449.20/x
  3. Step 3: Cross multiply
    266,117,999.60x = 399,176,999.40 × 163,549,449.20
  4. Step 4: Simplify right side
    266,117,999.60x = 65,285,178,385,178,720
  5. Step 5: Solve for x
    x = 65,285,178,385,178,720/266,117,999.60
  6. Step 6: Final answer
    x = 245,324,173.80

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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.