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Finding the Fourth Proportional to 476,713.80, 657,885.72 and 272,828.72

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Solution

The fourth proportional to 476,713.80, 657,885.72 and 272,828.72 is: 376,515.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,713.80 : 657,885.72 = 272,828.72 : x
  2. Step 2: Convert to fraction form
    476,713.80/657,885.72 = 272,828.72/x
  3. Step 3: Cross multiply
    476,713.80x = 657,885.72 × 272,828.72
  4. Step 4: Simplify right side
    476,713.80x = 179,490,118,893.88
  5. Step 5: Solve for x
    x = 179,490,118,893.88/476,713.80
  6. Step 6: Final answer
    x = 376,515.47

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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.