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Finding the Fourth Proportional to 230,435.07, 318,001.71 and 128,467

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Solution

The fourth proportional to 230,435.07, 318,001.71 and 128,467 is: 177,285.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,435.07 : 318,001.71 = 128,467 : x
  2. Step 2: Convert to fraction form
    230,435.07/318,001.71 = 128,467/x
  3. Step 3: Cross multiply
    230,435.07x = 318,001.71 × 128,467
  4. Step 4: Simplify right side
    230,435.07x = 40,852,725,678.57
  5. Step 5: Solve for x
    x = 40,852,725,678.57/230,435.07
  6. Step 6: Final answer
    x = 177,285.19

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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.