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Finding the Fourth Proportional to 448,513.68, 672,881.25 and 132,970.58

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Solution

The fourth proportional to 448,513.68, 672,881.25 and 132,970.58 is: 199,488.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,513.68 : 672,881.25 = 132,970.58 : x
  2. Step 2: Convert to fraction form
    448,513.68/672,881.25 = 132,970.58/x
  3. Step 3: Cross multiply
    448,513.68x = 672,881.25 × 132,970.58
  4. Step 4: Simplify right side
    448,513.68x = 89,473,406,719.22
  5. Step 5: Solve for x
    x = 89,473,406,719.22/448,513.68
  6. Step 6: Final answer
    x = 199,488.69

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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.