Home / 256,131,115.65-353,460,862.49-138,656,359.89

Finding the Fourth Proportional to 256,131,115.65, 353,460,862.49 and 138,656,359.89

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Solution

The fourth proportional to 256,131,115.65, 353,460,862.49 and 138,656,359.89 is: 191,345,734.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,131,115.65 : 353,460,862.49 = 138,656,359.89 : x
  2. Step 2: Convert to fraction form
    256,131,115.65/353,460,862.49 = 138,656,359.89/x
  3. Step 3: Cross multiply
    256,131,115.65x = 353,460,862.49 × 138,656,359.89
  4. Step 4: Simplify right side
    256,131,115.65x = 49,009,596,555,749,960
  5. Step 5: Solve for x
    x = 49,009,596,555,749,960/256,131,115.65
  6. Step 6: Final answer
    x = 191,345,734.90

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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.