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Finding the Fourth Proportional to 228,988.60, 315,993.09 and 127,005.03

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Solution

The fourth proportional to 228,988.60, 315,993.09 and 127,005.03 is: 175,260.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,988.60 : 315,993.09 = 127,005.03 : x
  2. Step 2: Convert to fraction form
    228,988.60/315,993.09 = 127,005.03/x
  3. Step 3: Cross multiply
    228,988.60x = 315,993.09 × 127,005.03
  4. Step 4: Simplify right side
    228,988.60x = 40,132,711,875.24
  5. Step 5: Solve for x
    x = 40,132,711,875.24/228,988.60
  6. Step 6: Final answer
    x = 175,260.74

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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.