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Finding the Fourth Proportional to 325,541.40, 488,312.10 and 207,443.40

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Solution

The fourth proportional to 325,541.40, 488,312.10 and 207,443.40 is: 311,165.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,541.40 : 488,312.10 = 207,443.40 : x
  2. Step 2: Convert to fraction form
    325,541.40/488,312.10 = 207,443.40/x
  3. Step 3: Cross multiply
    325,541.40x = 488,312.10 × 207,443.40
  4. Step 4: Simplify right side
    325,541.40x = 101,297,122,285.14
  5. Step 5: Solve for x
    x = 101,297,122,285.14/325,541.40
  6. Step 6: Final answer
    x = 311,165.10

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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.