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Finding the Fourth Proportional to 340,438.88, 510,372.45 and 148,169.72

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Solution

The fourth proportional to 340,438.88, 510,372.45 and 148,169.72 is: 222,130.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,438.88 : 510,372.45 = 148,169.72 : x
  2. Step 2: Convert to fraction form
    340,438.88/510,372.45 = 148,169.72/x
  3. Step 3: Cross multiply
    340,438.88x = 510,372.45 × 148,169.72
  4. Step 4: Simplify right side
    340,438.88x = 75,621,740,460.35
  5. Step 5: Solve for x
    x = 75,621,740,460.35/340,438.88
  6. Step 6: Final answer
    x = 222,130.16

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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.