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Finding the Fourth Proportional to 627,989.40, 942,041.70 and 207,266.20

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Solution

The fourth proportional to 627,989.40, 942,041.70 and 207,266.20 is: 310,918.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,989.40 : 942,041.70 = 207,266.20 : x
  2. Step 2: Convert to fraction form
    627,989.40/942,041.70 = 207,266.20/x
  3. Step 3: Cross multiply
    627,989.40x = 942,041.70 × 207,266.20
  4. Step 4: Simplify right side
    627,989.40x = 195,253,403,400.54
  5. Step 5: Solve for x
    x = 195,253,403,400.54/627,989.40
  6. Step 6: Final answer
    x = 310,918.31

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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.