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Finding the Fourth Proportional to 260,057.70, 389,430.45 and 207,569.70

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Solution

The fourth proportional to 260,057.70, 389,430.45 and 207,569.70 is: 310,830.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,057.70 : 389,430.45 = 207,569.70 : x
  2. Step 2: Convert to fraction form
    260,057.70/389,430.45 = 207,569.70/x
  3. Step 3: Cross multiply
    260,057.70x = 389,430.45 × 207,569.70
  4. Step 4: Simplify right side
    260,057.70x = 80,833,961,677.37
  5. Step 5: Solve for x
    x = 80,833,961,677.37/260,057.70
  6. Step 6: Final answer
    x = 310,830.87

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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.