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Finding the Fourth Proportional to 490,679.38, 736,018.84 and 153,746.51

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Solution

The fourth proportional to 490,679.38, 736,018.84 and 153,746.51 is: 230,619.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,679.38 : 736,018.84 = 153,746.51 : x
  2. Step 2: Convert to fraction form
    490,679.38/736,018.84 = 153,746.51/x
  3. Step 3: Cross multiply
    490,679.38x = 736,018.84 × 153,746.51
  4. Step 4: Simplify right side
    490,679.38x = 113,160,327,175.52
  5. Step 5: Solve for x
    x = 113,160,327,175.52/490,679.38
  6. Step 6: Final answer
    x = 230,619.69

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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.