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Finding the Fourth Proportional to 235,730.36, 325,307.88 and 128,301.16

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Solution

The fourth proportional to 235,730.36, 325,307.88 and 128,301.16 is: 177,055.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,730.36 : 325,307.88 = 128,301.16 : x
  2. Step 2: Convert to fraction form
    235,730.36/325,307.88 = 128,301.16/x
  3. Step 3: Cross multiply
    235,730.36x = 325,307.88 × 128,301.16
  4. Step 4: Simplify right side
    235,730.36x = 41,737,377,719.64
  5. Step 5: Solve for x
    x = 41,737,377,719.64/235,730.36
  6. Step 6: Final answer
    x = 177,055.59

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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.