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Finding the Fourth Proportional to 258,576.48, 387,866.88 and 81,110.88

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Solution

The fourth proportional to 258,576.48, 387,866.88 and 81,110.88 is: 121,667.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,576.48 : 387,866.88 = 81,110.88 : x
  2. Step 2: Convert to fraction form
    258,576.48/387,866.88 = 81,110.88/x
  3. Step 3: Cross multiply
    258,576.48x = 387,866.88 × 81,110.88
  4. Step 4: Simplify right side
    258,576.48x = 31,460,223,959.65
  5. Step 5: Solve for x
    x = 31,460,223,959.65/258,576.48
  6. Step 6: Final answer
    x = 121,667.00

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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.