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Finding the Fourth Proportional to 346,509.40, 519,326.70 and 252,905.80

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Solution

The fourth proportional to 346,509.40, 519,326.70 and 252,905.80 is: 379,039.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,509.40 : 519,326.70 = 252,905.80 : x
  2. Step 2: Convert to fraction form
    346,509.40/519,326.70 = 252,905.80/x
  3. Step 3: Cross multiply
    346,509.40x = 519,326.70 × 252,905.80
  4. Step 4: Simplify right side
    346,509.40x = 131,340,734,524.86
  5. Step 5: Solve for x
    x = 131,340,734,524.86/346,509.40
  6. Step 6: Final answer
    x = 379,039.46

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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.