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Finding the Fourth Proportional to 448,421.85, 672,728.66 and 164,111.45

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Solution

The fourth proportional to 448,421.85, 672,728.66 and 164,111.45 is: 246,202.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,421.85 : 672,728.66 = 164,111.45 : x
  2. Step 2: Convert to fraction form
    448,421.85/672,728.66 = 164,111.45/x
  3. Step 3: Cross multiply
    448,421.85x = 672,728.66 × 164,111.45
  4. Step 4: Simplify right side
    448,421.85x = 110,402,471,664.96
  5. Step 5: Solve for x
    x = 110,402,471,664.96/448,421.85
  6. Step 6: Final answer
    x = 246,202.26

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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.