Home / 245,566.40-338,878.23-138,136.40

Finding the Fourth Proportional to 245,566.40, 338,878.23 and 138,136.40

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Solution

The fourth proportional to 245,566.40, 338,878.23 and 138,136.40 is: 190,626.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,566.40 : 338,878.23 = 138,136.40 : x
  2. Step 2: Convert to fraction form
    245,566.40/338,878.23 = 138,136.40/x
  3. Step 3: Cross multiply
    245,566.40x = 338,878.23 × 138,136.40
  4. Step 4: Simplify right side
    245,566.40x = 46,811,418,730.57
  5. Step 5: Solve for x
    x = 46,811,418,730.57/245,566.40
  6. Step 6: Final answer
    x = 190,626.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.