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Finding the Fourth Proportional to 235,730.64, 325,303.74 and 128,303.04

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Solution

The fourth proportional to 235,730.64, 325,303.74 and 128,303.04 is: 177,055.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,730.64 : 325,303.74 = 128,303.04 : x
  2. Step 2: Convert to fraction form
    235,730.64/325,303.74 = 128,303.04/x
  3. Step 3: Cross multiply
    235,730.64x = 325,303.74 × 128,303.04
  4. Step 4: Simplify right side
    235,730.64x = 41,737,458,765.37
  5. Step 5: Solve for x
    x = 41,737,458,765.37/235,730.64
  6. Step 6: Final answer
    x = 177,055.72

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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.