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Finding the Fourth Proportional to 448,409.11, 671,866.33 and 315,050.63

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Solution

The fourth proportional to 448,409.11, 671,866.33 and 315,050.63 is: 472,050.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,409.11 : 671,866.33 = 315,050.63 : x
  2. Step 2: Convert to fraction form
    448,409.11/671,866.33 = 315,050.63/x
  3. Step 3: Cross multiply
    448,409.11x = 671,866.33 × 315,050.63
  4. Step 4: Simplify right side
    448,409.11x = 211,671,912,331.66
  5. Step 5: Solve for x
    x = 211,671,912,331.66/448,409.11
  6. Step 6: Final answer
    x = 472,050.87

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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.