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Finding the Fourth Proportional to 448,605.38, 619,004.40 and 267,312.80

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Solution

The fourth proportional to 448,605.38, 619,004.40 and 267,312.80 is: 368,849.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,605.38 : 619,004.40 = 267,312.80 : x
  2. Step 2: Convert to fraction form
    448,605.38/619,004.40 = 267,312.80/x
  3. Step 3: Cross multiply
    448,605.38x = 619,004.40 × 267,312.80
  4. Step 4: Simplify right side
    448,605.38x = 165,467,799,376.32
  5. Step 5: Solve for x
    x = 165,467,799,376.32/448,605.38
  6. Step 6: Final answer
    x = 368,849.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.