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Finding the Fourth Proportional to 372,618, 514,342.44 and 221,711.76

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Solution

The fourth proportional to 372,618, 514,342.44 and 221,711.76 is: 306,039.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,618 : 514,342.44 = 221,711.76 : x
  2. Step 2: Convert to fraction form
    372,618/514,342.44 = 221,711.76/x
  3. Step 3: Cross multiply
    372,618x = 514,342.44 × 221,711.76
  4. Step 4: Simplify right side
    372,618x = 114,035,767,615.09
  5. Step 5: Solve for x
    x = 114,035,767,615.09/372,618
  6. Step 6: Final answer
    x = 306,039.34

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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.