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Finding the Fourth Proportional to 487,645.62, 673,006.80 and 272,840.10

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Solution

The fourth proportional to 487,645.62, 673,006.80 and 272,840.10 is: 376,550.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,645.62 : 673,006.80 = 272,840.10 : x
  2. Step 2: Convert to fraction form
    487,645.62/673,006.80 = 272,840.10/x
  3. Step 3: Cross multiply
    487,645.62x = 673,006.80 × 272,840.10
  4. Step 4: Simplify right side
    487,645.62x = 183,623,242,612.68
  5. Step 5: Solve for x
    x = 183,623,242,612.68/487,645.62
  6. Step 6: Final answer
    x = 376,550.58

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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.