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Finding the Fourth Proportional to 352,719.40, 529,079.10 and 103,401.40

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Solution

The fourth proportional to 352,719.40, 529,079.10 and 103,401.40 is: 155,102.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,719.40 : 529,079.10 = 103,401.40 : x
  2. Step 2: Convert to fraction form
    352,719.40/529,079.10 = 103,401.40/x
  3. Step 3: Cross multiply
    352,719.40x = 529,079.10 × 103,401.40
  4. Step 4: Simplify right side
    352,719.40x = 54,707,519,650.74
  5. Step 5: Solve for x
    x = 54,707,519,650.74/352,719.40
  6. Step 6: Final answer
    x = 155,102.10

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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.