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Finding the Fourth Proportional to 448,660.51, 672,738.42 and 148,980.71

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Solution

The fourth proportional to 448,660.51, 672,738.42 and 148,980.71 is: 223,387.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,660.51 : 672,738.42 = 148,980.71 : x
  2. Step 2: Convert to fraction form
    448,660.51/672,738.42 = 148,980.71/x
  3. Step 3: Cross multiply
    448,660.51x = 672,738.42 × 148,980.71
  4. Step 4: Simplify right side
    448,660.51x = 100,225,047,455.88
  5. Step 5: Solve for x
    x = 100,225,047,455.88/448,660.51
  6. Step 6: Final answer
    x = 223,387.27

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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.