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Finding the Fourth Proportional to 235,728.30, 325,304.06 and 128,298.30

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Solution

The fourth proportional to 235,728.30, 325,304.06 and 128,298.30 is: 177,051.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,728.30 : 325,304.06 = 128,298.30 : x
  2. Step 2: Convert to fraction form
    235,728.30/325,304.06 = 128,298.30/x
  3. Step 3: Cross multiply
    235,728.30x = 325,304.06 × 128,298.30
  4. Step 4: Simplify right side
    235,728.30x = 41,735,957,881.10
  5. Step 5: Solve for x
    x = 41,735,957,881.10/235,728.30
  6. Step 6: Final answer
    x = 177,051.11

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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.