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Finding the Fourth Proportional to 487,555.44, 672,821.52 and 272,695

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Solution

The fourth proportional to 487,555.44, 672,821.52 and 272,695 is: 376,316.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,555.44 : 672,821.52 = 272,695 : x
  2. Step 2: Convert to fraction form
    487,555.44/672,821.52 = 272,695/x
  3. Step 3: Cross multiply
    487,555.44x = 672,821.52 × 272,695
  4. Step 4: Simplify right side
    487,555.44x = 183,475,064,396.40
  5. Step 5: Solve for x
    x = 183,475,064,396.40/487,555.44
  6. Step 6: Final answer
    x = 376,316.31

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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.