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Finding the Fourth Proportional to 340,614.72, 510,883.20 and 91,277.28

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Solution

The fourth proportional to 340,614.72, 510,883.20 and 91,277.28 is: 136,905.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,614.72 : 510,883.20 = 91,277.28 : x
  2. Step 2: Convert to fraction form
    340,614.72/510,883.20 = 91,277.28/x
  3. Step 3: Cross multiply
    340,614.72x = 510,883.20 × 91,277.28
  4. Step 4: Simplify right side
    340,614.72x = 46,632,028,893.70
  5. Step 5: Solve for x
    x = 46,632,028,893.70/340,614.72
  6. Step 6: Final answer
    x = 136,905.50

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1.5x scale

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.