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Finding the Fourth Proportional to 235,650.72, 325,199.40 and 128,221.56

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Solution

The fourth proportional to 235,650.72, 325,199.40 and 128,221.56 is: 176,946.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,650.72 : 325,199.40 = 128,221.56 : x
  2. Step 2: Convert to fraction form
    235,650.72/325,199.40 = 128,221.56/x
  3. Step 3: Cross multiply
    235,650.72x = 325,199.40 × 128,221.56
  4. Step 4: Simplify right side
    235,650.72x = 41,697,574,379.06
  5. Step 5: Solve for x
    x = 41,697,574,379.06/235,650.72
  6. Step 6: Final answer
    x = 176,946.52

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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.