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Finding the Fourth Proportional to 517,070.36, 775,605.75 and 162,112.05

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Solution

The fourth proportional to 517,070.36, 775,605.75 and 162,112.05 is: 243,168.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,070.36 : 775,605.75 = 162,112.05 : x
  2. Step 2: Convert to fraction form
    517,070.36/775,605.75 = 162,112.05/x
  3. Step 3: Cross multiply
    517,070.36x = 775,605.75 × 162,112.05
  4. Step 4: Simplify right side
    517,070.36x = 125,735,038,124.29
  5. Step 5: Solve for x
    x = 125,735,038,124.29/517,070.36
  6. Step 6: Final answer
    x = 243,168.14

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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.