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Finding the Fourth Proportional to 255,999.75, 353,412.45 and 187,011.75

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Solution

The fourth proportional to 255,999.75, 353,412.45 and 187,011.75 is: 258,173.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,999.75 : 353,412.45 = 187,011.75 : x
  2. Step 2: Convert to fraction form
    255,999.75/353,412.45 = 187,011.75/x
  3. Step 3: Cross multiply
    255,999.75x = 353,412.45 × 187,011.75
  4. Step 4: Simplify right side
    255,999.75x = 66,092,280,746.29
  5. Step 5: Solve for x
    x = 66,092,280,746.29/255,999.75
  6. Step 6: Final answer
    x = 258,173.22

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1.5x scale

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.