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Finding the Fourth Proportional to 441,415.40, 662,123.10 and 108,991.40

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Solution

The fourth proportional to 441,415.40, 662,123.10 and 108,991.40 is: 163,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,415.40 : 662,123.10 = 108,991.40 : x
  2. Step 2: Convert to fraction form
    441,415.40/662,123.10 = 108,991.40/x
  3. Step 3: Cross multiply
    441,415.40x = 662,123.10 × 108,991.40
  4. Step 4: Simplify right side
    441,415.40x = 72,165,723,641.34
  5. Step 5: Solve for x
    x = 72,165,723,641.34/441,415.40
  6. Step 6: Final answer
    x = 163,487.10

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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.