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Finding the Fourth Proportional to 627,988.40, 942,040.20 and 207,265.20

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Solution

The fourth proportional to 627,988.40, 942,040.20 and 207,265.20 is: 310,916.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,988.40 : 942,040.20 = 207,265.20 : x
  2. Step 2: Convert to fraction form
    627,988.40/942,040.20 = 207,265.20/x
  3. Step 3: Cross multiply
    627,988.40x = 942,040.20 × 207,265.20
  4. Step 4: Simplify right side
    627,988.40x = 195,252,150,461.04
  5. Step 5: Solve for x
    x = 195,252,150,461.04/627,988.40
  6. Step 6: Final answer
    x = 310,916.81

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1.5x scale

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.