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Finding the Fourth Proportional to 448,647.30, 672,740.10 and 133,063.20

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Solution

The fourth proportional to 448,647.30, 672,740.10 and 133,063.20 is: 199,526.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,647.30 : 672,740.10 = 133,063.20 : x
  2. Step 2: Convert to fraction form
    448,647.30/672,740.10 = 133,063.20/x
  3. Step 3: Cross multiply
    448,647.30x = 672,740.10 × 133,063.20
  4. Step 4: Simplify right side
    448,647.30x = 89,516,950,474.32
  5. Step 5: Solve for x
    x = 89,516,950,474.32/448,647.30
  6. Step 6: Final answer
    x = 199,526.33

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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.