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Finding the Fourth Proportional to 348,029.80, 521,007.90 and 207,716.20

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Solution

The fourth proportional to 348,029.80, 521,007.90 and 207,716.20 is: 310,955.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,029.80 : 521,007.90 = 207,716.20 : x
  2. Step 2: Convert to fraction form
    348,029.80/521,007.90 = 207,716.20/x
  3. Step 3: Cross multiply
    348,029.80x = 521,007.90 × 207,716.20
  4. Step 4: Simplify right side
    348,029.80x = 108,221,781,157.98
  5. Step 5: Solve for x
    x = 108,221,781,157.98/348,029.80
  6. Step 6: Final answer
    x = 310,955.50

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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.