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Finding the Fourth Proportional to 441,369, 662,055.12 and 108,945

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Solution

The fourth proportional to 441,369, 662,055.12 and 108,945 is: 163,417.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,369 : 662,055.12 = 108,945 : x
  2. Step 2: Convert to fraction form
    441,369/662,055.12 = 108,945/x
  3. Step 3: Cross multiply
    441,369x = 662,055.12 × 108,945
  4. Step 4: Simplify right side
    441,369x = 72,127,595,048.40
  5. Step 5: Solve for x
    x = 72,127,595,048.40/441,369
  6. Step 6: Final answer
    x = 163,417.90

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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.