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Finding the Fourth Proportional to 325,386.10, 488,034.15 and 100,900.90

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Solution

The fourth proportional to 325,386.10, 488,034.15 and 100,900.90 is: 151,337.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,386.10 : 488,034.15 = 100,900.90 : x
  2. Step 2: Convert to fraction form
    325,386.10/488,034.15 = 100,900.90/x
  3. Step 3: Cross multiply
    325,386.10x = 488,034.15 × 100,900.90
  4. Step 4: Simplify right side
    325,386.10x = 49,243,084,965.74
  5. Step 5: Solve for x
    x = 49,243,084,965.74/325,386.10
  6. Step 6: Final answer
    x = 151,337.40

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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.