Home / 287,712,804.70-431,073,195.45-134,043,687.10

Finding the Fourth Proportional to 287,712,804.70, 431,073,195.45 and 134,043,687.10

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Solution

The fourth proportional to 287,712,804.70, 431,073,195.45 and 134,043,687.10 is: 200,834,441.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,712,804.70 : 431,073,195.45 = 134,043,687.10 : x
  2. Step 2: Convert to fraction form
    287,712,804.70/431,073,195.45 = 134,043,687.10/x
  3. Step 3: Cross multiply
    287,712,804.70x = 431,073,195.45 × 134,043,687.10
  4. Step 4: Simplify right side
    287,712,804.70x = 57,782,640,528,096,936
  5. Step 5: Solve for x
    x = 57,782,640,528,096,936/287,712,804.70
  6. Step 6: Final answer
    x = 200,834,441.79

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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.