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Finding the Fourth Proportional to 255,302.33, 382,999.19 and 86,813.91

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Solution

The fourth proportional to 255,302.33, 382,999.19 and 86,813.91 is: 130,236.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,302.33 : 382,999.19 = 86,813.91 : x
  2. Step 2: Convert to fraction form
    255,302.33/382,999.19 = 86,813.91/x
  3. Step 3: Cross multiply
    255,302.33x = 382,999.19 × 86,813.91
  4. Step 4: Simplify right side
    255,302.33x = 33,249,656,776.66
  5. Step 5: Solve for x
    x = 33,249,656,776.66/255,302.33
  6. Step 6: Final answer
    x = 130,236.40

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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.