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Finding the Fourth Proportional to 239,371.76, 359,161.56 and 128,434.16

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Solution

The fourth proportional to 239,371.76, 359,161.56 and 128,434.16 is: 192,707.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,371.76 : 359,161.56 = 128,434.16 : x
  2. Step 2: Convert to fraction form
    239,371.76/359,161.56 = 128,434.16/x
  3. Step 3: Cross multiply
    239,371.76x = 359,161.56 × 128,434.16
  4. Step 4: Simplify right side
    239,371.76x = 46,128,613,262.89
  5. Step 5: Solve for x
    x = 46,128,613,262.89/239,371.76
  6. Step 6: Final answer
    x = 192,707.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.