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Finding the Fourth Proportional to 517,303.76, 775,988.43 and 162,331.79

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Solution

The fourth proportional to 517,303.76, 775,988.43 and 162,331.79 is: 243,507.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,303.76 : 775,988.43 = 162,331.79 : x
  2. Step 2: Convert to fraction form
    517,303.76/775,988.43 = 162,331.79/x
  3. Step 3: Cross multiply
    517,303.76x = 775,988.43 × 162,331.79
  4. Step 4: Simplify right side
    517,303.76x = 125,967,586,981.25
  5. Step 5: Solve for x
    x = 125,967,586,981.25/517,303.76
  6. Step 6: Final answer
    x = 243,507.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.