Home / 287,712,032.80-431,568,049.20-259,942,381.60

Finding the Fourth Proportional to 287,712,032.80, 431,568,049.20 and 259,942,381.60

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Solution

The fourth proportional to 287,712,032.80, 431,568,049.20 and 259,942,381.60 is: 389,913,572.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,712,032.80 : 431,568,049.20 = 259,942,381.60 : x
  2. Step 2: Convert to fraction form
    287,712,032.80/431,568,049.20 = 259,942,381.60/x
  3. Step 3: Cross multiply
    287,712,032.80x = 431,568,049.20 × 259,942,381.60
  4. Step 4: Simplify right side
    287,712,032.80x = 112,182,826,531,513,968
  5. Step 5: Solve for x
    x = 112,182,826,531,513,968/287,712,032.80
  6. Step 6: Final answer
    x = 389,913,572.40

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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.