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Finding the Fourth Proportional to 487,864, 673,155.66 and 272,962.36

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Solution

The fourth proportional to 487,864, 673,155.66 and 272,962.36 is: 376,633.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,864 : 673,155.66 = 272,962.36 : x
  2. Step 2: Convert to fraction form
    487,864/673,155.66 = 272,962.36/x
  3. Step 3: Cross multiply
    487,864x = 673,155.66 × 272,962.36
  4. Step 4: Simplify right side
    487,864x = 183,746,157,600.96
  5. Step 5: Solve for x
    x = 183,746,157,600.96/487,864
  6. Step 6: Final answer
    x = 376,633.98

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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.