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Finding the Fourth Proportional to 268,515.72, 370,543.86 and 147,656.88

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Solution

The fourth proportional to 268,515.72, 370,543.86 and 147,656.88 is: 203,762.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,515.72 : 370,543.86 = 147,656.88 : x
  2. Step 2: Convert to fraction form
    268,515.72/370,543.86 = 147,656.88/x
  3. Step 3: Cross multiply
    268,515.72x = 370,543.86 × 147,656.88
  4. Step 4: Simplify right side
    268,515.72x = 54,713,350,270.76
  5. Step 5: Solve for x
    x = 54,713,350,270.76/268,515.72
  6. Step 6: Final answer
    x = 203,762.19

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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.