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Finding the Fourth Proportional to 448,313.13, 672,338.48 and 369,231.21

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Solution

The fourth proportional to 448,313.13, 672,338.48 and 369,231.21 is: 553,738.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,313.13 : 672,338.48 = 369,231.21 : x
  2. Step 2: Convert to fraction form
    448,313.13/672,338.48 = 369,231.21/x
  3. Step 3: Cross multiply
    448,313.13x = 672,338.48 × 369,231.21
  4. Step 4: Simplify right side
    448,313.13x = 248,248,348,653.81
  5. Step 5: Solve for x
    x = 248,248,348,653.81/448,313.13
  6. Step 6: Final answer
    x = 553,738.74

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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.