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Finding the Fourth Proportional to 232,312.80, 320,610.99 and 128,956.72

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Solution

The fourth proportional to 232,312.80, 320,610.99 and 128,956.72 is: 177,971.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    232,312.80 : 320,610.99 = 128,956.72 : x
  2. Step 2: Convert to fraction form
    232,312.80/320,610.99 = 128,956.72/x
  3. Step 3: Cross multiply
    232,312.80x = 320,610.99 × 128,956.72
  4. Step 4: Simplify right side
    232,312.80x = 41,344,941,021.57
  5. Step 5: Solve for x
    x = 41,344,941,021.57/232,312.80
  6. Step 6: Final answer
    x = 177,971.00

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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.