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Finding the Fourth Proportional to 268,126.72, 370,060.16 and 155,015.04

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Solution

The fourth proportional to 268,126.72, 370,060.16 and 155,015.04 is: 213,946.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,126.72 : 370,060.16 = 155,015.04 : x
  2. Step 2: Convert to fraction form
    268,126.72/370,060.16 = 155,015.04/x
  3. Step 3: Cross multiply
    268,126.72x = 370,060.16 × 155,015.04
  4. Step 4: Simplify right side
    268,126.72x = 57,364,890,504.81
  5. Step 5: Solve for x
    x = 57,364,890,504.81/268,126.72
  6. Step 6: Final answer
    x = 213,946.94

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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.