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Finding the Fourth Proportional to 340,388.17, 510,658.11 and 103,749.30

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Solution

The fourth proportional to 340,388.17, 510,658.11 and 103,749.30 is: 155,647.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,388.17 : 510,658.11 = 103,749.30 : x
  2. Step 2: Convert to fraction form
    340,388.17/510,658.11 = 103,749.30/x
  3. Step 3: Cross multiply
    340,388.17x = 510,658.11 × 103,749.30
  4. Step 4: Simplify right side
    340,388.17x = 52,980,421,451.82
  5. Step 5: Solve for x
    x = 52,980,421,451.82/340,388.17
  6. Step 6: Final answer
    x = 155,647.07

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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.