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Finding the Fourth Proportional to 448,613.19, 619,293.52 and 276,561.90

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Solution

The fourth proportional to 448,613.19, 619,293.52 and 276,561.90 is: 381,783.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,613.19 : 619,293.52 = 276,561.90 : x
  2. Step 2: Convert to fraction form
    448,613.19/619,293.52 = 276,561.90/x
  3. Step 3: Cross multiply
    448,613.19x = 619,293.52 × 276,561.90
  4. Step 4: Simplify right side
    448,613.19x = 171,272,992,548.89
  5. Step 5: Solve for x
    x = 171,272,992,548.89/448,613.19
  6. Step 6: Final answer
    x = 381,783.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.