Home / 312,140.40-430,755.24-176,180.10

Finding the Fourth Proportional to 312,140.40, 430,755.24 and 176,180.10

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Solution

The fourth proportional to 312,140.40, 430,755.24 and 176,180.10 is: 243,129.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,140.40 : 430,755.24 = 176,180.10 : x
  2. Step 2: Convert to fraction form
    312,140.40/430,755.24 = 176,180.10/x
  3. Step 3: Cross multiply
    312,140.40x = 430,755.24 × 176,180.10
  4. Step 4: Simplify right side
    312,140.40x = 75,890,501,258.72
  5. Step 5: Solve for x
    x = 75,890,501,258.72/312,140.40
  6. Step 6: Final answer
    x = 243,129.38

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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.