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Finding the Fourth Proportional to 487,194.50, 672,281.16 and 305,848.46

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Solution

The fourth proportional to 487,194.50, 672,281.16 and 305,848.46 is: 422,041.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,194.50 : 672,281.16 = 305,848.46 : x
  2. Step 2: Convert to fraction form
    487,194.50/672,281.16 = 305,848.46/x
  3. Step 3: Cross multiply
    487,194.50x = 672,281.16 × 305,848.46
  4. Step 4: Simplify right side
    487,194.50x = 205,616,157,473.01
  5. Step 5: Solve for x
    x = 205,616,157,473.01/487,194.50
  6. Step 6: Final answer
    x = 422,041.21

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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.