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Finding the Fourth Proportional to 287,681.00, 397,169.87 and 255,761.54

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Solution

The fourth proportional to 287,681.00, 397,169.87 and 255,761.54 is: 353,102.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,681.00 : 397,169.87 = 255,761.54 : x
  2. Step 2: Convert to fraction form
    287,681.00/397,169.87 = 255,761.54/x
  3. Step 3: Cross multiply
    287,681.00x = 397,169.87 × 255,761.54
  4. Step 4: Simplify right side
    287,681.00x = 101,580,779,225.13
  5. Step 5: Solve for x
    x = 101,580,779,225.13/287,681.00
  6. Step 6: Final answer
    x = 353,102.15

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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.