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Finding the Fourth Proportional to 340,007.48, 510,027.86 and 129,606.20

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Solution

The fourth proportional to 340,007.48, 510,027.86 and 129,606.20 is: 194,415.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,007.48 : 510,027.86 = 129,606.20 : x
  2. Step 2: Convert to fraction form
    340,007.48/510,027.86 = 129,606.20/x
  3. Step 3: Cross multiply
    340,007.48x = 510,027.86 × 129,606.20
  4. Step 4: Simplify right side
    340,007.48x = 66,102,772,828.73
  5. Step 5: Solve for x
    x = 66,102,772,828.73/340,007.48
  6. Step 6: Final answer
    x = 194,415.64

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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.