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Finding the Fourth Proportional to 487,671.80, 672,971.46 and 272,807.24

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Solution

The fourth proportional to 487,671.80, 672,971.46 and 272,807.24 is: 376,465.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,671.80 : 672,971.46 = 272,807.24 : x
  2. Step 2: Convert to fraction form
    487,671.80/672,971.46 = 272,807.24/x
  3. Step 3: Cross multiply
    487,671.80x = 672,971.46 × 272,807.24
  4. Step 4: Simplify right side
    487,671.80x = 183,591,486,601.37
  5. Step 5: Solve for x
    x = 183,591,486,601.37/487,671.80
  6. Step 6: Final answer
    x = 376,465.25

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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.