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Finding the Fourth Proportional to 448,405.72, 671,139.63 and 245,692.69

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Solution

The fourth proportional to 448,405.72, 671,139.63 and 245,692.69 is: 367,734.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,405.72 : 671,139.63 = 245,692.69 : x
  2. Step 2: Convert to fraction form
    448,405.72/671,139.63 = 245,692.69/x
  3. Step 3: Cross multiply
    448,405.72x = 671,139.63 × 245,692.69
  4. Step 4: Simplify right side
    448,405.72x = 164,894,099,382.46
  5. Step 5: Solve for x
    x = 164,894,099,382.46/448,405.72
  6. Step 6: Final answer
    x = 367,734.16

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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.