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Finding the Fourth Proportional to 262,807.70, 394,211.55 and 260,042.90

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Solution

The fourth proportional to 262,807.70, 394,211.55 and 260,042.90 is: 390,064.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,807.70 : 394,211.55 = 260,042.90 : x
  2. Step 2: Convert to fraction form
    262,807.70/394,211.55 = 260,042.90/x
  3. Step 3: Cross multiply
    262,807.70x = 394,211.55 × 260,042.90
  4. Step 4: Simplify right side
    262,807.70x = 102,511,914,675.50
  5. Step 5: Solve for x
    x = 102,511,914,675.50/262,807.70
  6. Step 6: Final answer
    x = 390,064.35

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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.