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Finding the Fourth Proportional to 339,141.70, 508,712.55 and 260,652.10

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Solution

The fourth proportional to 339,141.70, 508,712.55 and 260,652.10 is: 390,978.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,141.70 : 508,712.55 = 260,652.10 : x
  2. Step 2: Convert to fraction form
    339,141.70/508,712.55 = 260,652.10/x
  3. Step 3: Cross multiply
    339,141.70x = 508,712.55 × 260,652.10
  4. Step 4: Simplify right side
    339,141.70x = 132,596,994,453.86
  5. Step 5: Solve for x
    x = 132,596,994,453.86/339,141.70
  6. Step 6: Final answer
    x = 390,978.15

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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.