Home / 285,434,720.20-428,152,080.30-199,341,278.20

Finding the Fourth Proportional to 285,434,720.20, 428,152,080.30 and 199,341,278.20

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Solution

The fourth proportional to 285,434,720.20, 428,152,080.30 and 199,341,278.20 is: 299,011,917.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,434,720.20 : 428,152,080.30 = 199,341,278.20 : x
  2. Step 2: Convert to fraction form
    285,434,720.20/428,152,080.30 = 199,341,278.20/x
  3. Step 3: Cross multiply
    285,434,720.20x = 428,152,080.30 × 199,341,278.20
  4. Step 4: Simplify right side
    285,434,720.20x = 85,348,382,950,991,040
  5. Step 5: Solve for x
    x = 85,348,382,950,991,040/285,434,720.20
  6. Step 6: Final answer
    x = 299,011,917.30

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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.