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Finding the Fourth Proportional to 448,036.40, 672,040.20 and 148,530.80

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Solution

The fourth proportional to 448,036.40, 672,040.20 and 148,530.80 is: 222,791.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,036.40 : 672,040.20 = 148,530.80 : x
  2. Step 2: Convert to fraction form
    448,036.40/672,040.20 = 148,530.80/x
  3. Step 3: Cross multiply
    448,036.40x = 672,040.20 × 148,530.80
  4. Step 4: Simplify right side
    448,036.40x = 99,818,668,538.16
  5. Step 5: Solve for x
    x = 99,818,668,538.16/448,036.40
  6. Step 6: Final answer
    x = 222,791.43

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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.