Home / 287,712,806.20-431,073,197.70-134,043,688.60

Finding the Fourth Proportional to 287,712,806.20, 431,073,197.70 and 134,043,688.60

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Solution

The fourth proportional to 287,712,806.20, 431,073,197.70 and 134,043,688.60 is: 200,834,444.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,712,806.20 : 431,073,197.70 = 134,043,688.60 : x
  2. Step 2: Convert to fraction form
    287,712,806.20/431,073,197.70 = 134,043,688.60/x
  3. Step 3: Cross multiply
    287,712,806.20x = 431,073,197.70 × 134,043,688.60
  4. Step 4: Simplify right side
    287,712,806.20x = 57,782,641,476,305,032
  5. Step 5: Solve for x
    x = 57,782,641,476,305,032/287,712,806.20
  6. Step 6: Final answer
    x = 200,834,444.04

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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.