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Finding the Fourth Proportional to 268,424.56, 370,278 and 170,128

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Solution

The fourth proportional to 268,424.56, 370,278 and 170,128 is: 234,682.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,424.56 : 370,278 = 170,128 : x
  2. Step 2: Convert to fraction form
    268,424.56/370,278 = 170,128/x
  3. Step 3: Cross multiply
    268,424.56x = 370,278 × 170,128
  4. Step 4: Simplify right side
    268,424.56x = 62,994,655,584
  5. Step 5: Solve for x
    x = 62,994,655,584/268,424.56
  6. Step 6: Final answer
    x = 234,682.91

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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.