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Finding the Fourth Proportional to 448,388.48, 672,681.12 and 132,870.08

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Solution

The fourth proportional to 448,388.48, 672,681.12 and 132,870.08 is: 199,334.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,388.48 : 672,681.12 = 132,870.08 : x
  2. Step 2: Convert to fraction form
    448,388.48/672,681.12 = 132,870.08/x
  3. Step 3: Cross multiply
    448,388.48x = 672,681.12 × 132,870.08
  4. Step 4: Simplify right side
    448,388.48x = 89,379,194,228.89
  5. Step 5: Solve for x
    x = 89,379,194,228.89/448,388.48
  6. Step 6: Final answer
    x = 199,334.28

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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.