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Finding the Fourth Proportional to 235,730.36, 325,314.80 and 128,307.35

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Solution

The fourth proportional to 235,730.36, 325,314.80 and 128,307.35 is: 177,067.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,730.36 : 325,314.80 = 128,307.35 : x
  2. Step 2: Convert to fraction form
    235,730.36/325,314.80 = 128,307.35/x
  3. Step 3: Cross multiply
    235,730.36x = 325,314.80 × 128,307.35
  4. Step 4: Simplify right side
    235,730.36x = 41,740,277,635.67
  5. Step 5: Solve for x
    x = 41,740,277,635.67/235,730.36
  6. Step 6: Final answer
    x = 177,067.89

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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.