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Finding the Fourth Proportional to 340,434.78, 510,686.01 and 130,249.50

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Solution

The fourth proportional to 340,434.78, 510,686.01 and 130,249.50 is: 195,387.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,434.78 : 510,686.01 = 130,249.50 : x
  2. Step 2: Convert to fraction form
    340,434.78/510,686.01 = 130,249.50/x
  3. Step 3: Cross multiply
    340,434.78x = 510,686.01 × 130,249.50
  4. Step 4: Simplify right side
    340,434.78x = 66,516,597,459.50
  5. Step 5: Solve for x
    x = 66,516,597,459.50/340,434.78
  6. Step 6: Final answer
    x = 195,387.20

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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.