Home / 287,712,004.20-431,568,006.30-263,903,447.40

Finding the Fourth Proportional to 287,712,004.20, 431,568,006.30 and 263,903,447.40

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Solution

The fourth proportional to 287,712,004.20, 431,568,006.30 and 263,903,447.40 is: 395,855,171.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,712,004.20 : 431,568,006.30 = 263,903,447.40 : x
  2. Step 2: Convert to fraction form
    287,712,004.20/431,568,006.30 = 263,903,447.40/x
  3. Step 3: Cross multiply
    287,712,004.20x = 431,568,006.30 × 263,903,447.40
  4. Step 4: Simplify right side
    287,712,004.20x = 113,892,284,650,114,928
  5. Step 5: Solve for x
    x = 113,892,284,650,114,928/287,712,004.20
  6. Step 6: Final answer
    x = 395,855,171.10

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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.