Home / 287,418,915.74-431,164,228.13-112,519,357.60

Finding the Fourth Proportional to 287,418,915.74, 431,164,228.13 and 112,519,357.60

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Solution

The fourth proportional to 287,418,915.74, 431,164,228.13 and 112,519,357.60 is: 168,793,072.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,418,915.74 : 431,164,228.13 = 112,519,357.60 : x
  2. Step 2: Convert to fraction form
    287,418,915.74/431,164,228.13 = 112,519,357.60/x
  3. Step 3: Cross multiply
    287,418,915.74x = 431,164,228.13 × 112,519,357.60
  4. Step 4: Simplify right side
    287,418,915.74x = 48,514,321,969,287,448
  5. Step 5: Solve for x
    x = 48,514,321,969,287,448/287,418,915.74
  6. Step 6: Final answer
    x = 168,793,072.80

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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.