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Finding the Fourth Proportional to 448,071.04, 618,309.21 and 266,796.28

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Solution

The fourth proportional to 448,071.04, 618,309.21 and 266,796.28 is: 368,161.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,071.04 : 618,309.21 = 266,796.28 : x
  2. Step 2: Convert to fraction form
    448,071.04/618,309.21 = 266,796.28/x
  3. Step 3: Cross multiply
    448,071.04x = 618,309.21 × 266,796.28
  4. Step 4: Simplify right side
    448,071.04x = 164,962,597,117.74
  5. Step 5: Solve for x
    x = 164,962,597,117.74/448,071.04
  6. Step 6: Final answer
    x = 368,161.70

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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.