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Finding the Fourth Proportional to 476,448.50, 657,311.40 and 272,389.79

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Solution

The fourth proportional to 476,448.50, 657,311.40 and 272,389.79 is: 375,790.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,448.50 : 657,311.40 = 272,389.79 : x
  2. Step 2: Convert to fraction form
    476,448.50/657,311.40 = 272,389.79/x
  3. Step 3: Cross multiply
    476,448.50x = 657,311.40 × 272,389.79
  4. Step 4: Simplify right side
    476,448.50x = 179,044,910,924.05
  5. Step 5: Solve for x
    x = 179,044,910,924.05/476,448.50
  6. Step 6: Final answer
    x = 375,790.69

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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.