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Finding the Fourth Proportional to 218,772.70, 307,214.90 and 218,772.70

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Solution

The fourth proportional to 218,772.70, 307,214.90 and 218,772.70 is: 307,214.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,772.70 : 307,214.90 = 218,772.70 : x
  2. Step 2: Convert to fraction form
    218,772.70/307,214.90 = 218,772.70/x
  3. Step 3: Cross multiply
    218,772.70x = 307,214.90 × 218,772.70
  4. Step 4: Simplify right side
    218,772.70x = 67,210,233,153.23
  5. Step 5: Solve for x
    x = 67,210,233,153.23/218,772.70
  6. Step 6: Final answer
    x = 307,214.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.