Home / 338,128.32-507,366.96-148,721.28

Finding the Fourth Proportional to 338,128.32, 507,366.96 and 148,721.28

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Solution

The fourth proportional to 338,128.32, 507,366.96 and 148,721.28 is: 223,158.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,128.32 : 507,366.96 = 148,721.28 : x
  2. Step 2: Convert to fraction form
    338,128.32/507,366.96 = 148,721.28/x
  3. Step 3: Cross multiply
    338,128.32x = 507,366.96 × 148,721.28
  4. Step 4: Simplify right side
    338,128.32x = 75,456,263,720.91
  5. Step 5: Solve for x
    x = 75,456,263,720.91/338,128.32
  6. Step 6: Final answer
    x = 223,158.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.