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Finding the Fourth Proportional to 264,036.70, 396,055.05 and 86,561.65

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Solution

The fourth proportional to 264,036.70, 396,055.05 and 86,561.65 is: 129,842.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,036.70 : 396,055.05 = 86,561.65 : x
  2. Step 2: Convert to fraction form
    264,036.70/396,055.05 = 86,561.65/x
  3. Step 3: Cross multiply
    264,036.70x = 396,055.05 × 86,561.65
  4. Step 4: Simplify right side
    264,036.70x = 34,283,178,618.83
  5. Step 5: Solve for x
    x = 34,283,178,618.83/264,036.70
  6. Step 6: Final answer
    x = 129,842.48

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1.5x scale

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.