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Finding the Fourth Proportional to 340,345.28, 510,578.72 and 115,693.91

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Solution

The fourth proportional to 340,345.28, 510,578.72 and 115,693.91 is: 173,561.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,345.28 : 510,578.72 = 115,693.91 : x
  2. Step 2: Convert to fraction form
    340,345.28/510,578.72 = 115,693.91/x
  3. Step 3: Cross multiply
    340,345.28x = 510,578.72 × 115,693.91
  4. Step 4: Simplify right side
    340,345.28x = 59,070,848,479.60
  5. Step 5: Solve for x
    x = 59,070,848,479.60/340,345.28
  6. Step 6: Final answer
    x = 173,561.53

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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.