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Finding the Fourth Proportional to 235,706.18, 325,264.80 and 128,276.42

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Solution

The fourth proportional to 235,706.18, 325,264.80 and 128,276.42 is: 177,016.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,706.18 : 325,264.80 = 128,276.42 : x
  2. Step 2: Convert to fraction form
    235,706.18/325,264.80 = 128,276.42/x
  3. Step 3: Cross multiply
    235,706.18x = 325,264.80 × 128,276.42
  4. Step 4: Simplify right side
    235,706.18x = 41,723,804,096.02
  5. Step 5: Solve for x
    x = 41,723,804,096.02/235,706.18
  6. Step 6: Final answer
    x = 177,016.17

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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.