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Finding the Fourth Proportional to 275,688.70, 386,751.50 and 275,688.70

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Solution

The fourth proportional to 275,688.70, 386,751.50 and 275,688.70 is: 386,751.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,688.70 : 386,751.50 = 275,688.70 : x
  2. Step 2: Convert to fraction form
    275,688.70/386,751.50 = 275,688.70/x
  3. Step 3: Cross multiply
    275,688.70x = 386,751.50 × 275,688.70
  4. Step 4: Simplify right side
    275,688.70x = 106,623,018,258.05
  5. Step 5: Solve for x
    x = 106,623,018,258.05/275,688.70
  6. Step 6: Final answer
    x = 386,751.50

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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.