Home / 228,949.74-315,948.60-128,347.74

Finding the Fourth Proportional to 228,949.74, 315,948.60 and 128,347.74

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Solution

The fourth proportional to 228,949.74, 315,948.60 and 128,347.74 is: 177,118.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,949.74 : 315,948.60 = 128,347.74 : x
  2. Step 2: Convert to fraction form
    228,949.74/315,948.60 = 128,347.74/x
  3. Step 3: Cross multiply
    228,949.74x = 315,948.60 × 128,347.74
  4. Step 4: Simplify right side
    228,949.74x = 40,551,288,766.16
  5. Step 5: Solve for x
    x = 40,551,288,766.16/228,949.74
  6. Step 6: Final answer
    x = 177,118.74

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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.