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Finding the Fourth Proportional to 448,009.79, 672,113.01 and 329,321.30

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Solution

The fourth proportional to 448,009.79, 672,113.01 and 329,321.30 is: 494,054.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,009.79 : 672,113.01 = 329,321.30 : x
  2. Step 2: Convert to fraction form
    448,009.79/672,113.01 = 329,321.30/x
  3. Step 3: Cross multiply
    448,009.79x = 672,113.01 × 329,321.30
  4. Step 4: Simplify right side
    448,009.79x = 221,341,130,200.11
  5. Step 5: Solve for x
    x = 221,341,130,200.11/448,009.79
  6. Step 6: Final answer
    x = 494,054.23

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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.