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Finding the Fourth Proportional to 340,336.72, 510,578.88 and 103,673.20

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Solution

The fourth proportional to 340,336.72, 510,578.88 and 103,673.20 is: 155,532.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,336.72 : 510,578.88 = 103,673.20 : x
  2. Step 2: Convert to fraction form
    340,336.72/510,578.88 = 103,673.20/x
  3. Step 3: Cross multiply
    340,336.72x = 510,578.88 × 103,673.20
  4. Step 4: Simplify right side
    340,336.72x = 52,933,346,342.02
  5. Step 5: Solve for x
    x = 52,933,346,342.02/340,336.72
  6. Step 6: Final answer
    x = 155,532.28

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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.