Home / 228,631.97-315,666.09-142,721.75

Finding the Fourth Proportional to 228,631.97, 315,666.09 and 142,721.75

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Solution

The fourth proportional to 228,631.97, 315,666.09 and 142,721.75 is: 197,052.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,631.97 : 315,666.09 = 142,721.75 : x
  2. Step 2: Convert to fraction form
    228,631.97/315,666.09 = 142,721.75/x
  3. Step 3: Cross multiply
    228,631.97x = 315,666.09 × 142,721.75
  4. Step 4: Simplify right side
    228,631.97x = 45,052,416,780.46
  5. Step 5: Solve for x
    x = 45,052,416,780.46/228,631.97
  6. Step 6: Final answer
    x = 197,052.13

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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.