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Finding the Fourth Proportional to 262,816.70, 394,225.05 and 260,051.90

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Solution

The fourth proportional to 262,816.70, 394,225.05 and 260,051.90 is: 390,077.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,816.70 : 394,225.05 = 260,051.90 : x
  2. Step 2: Convert to fraction form
    262,816.70/394,225.05 = 260,051.90/x
  3. Step 3: Cross multiply
    262,816.70x = 394,225.05 × 260,051.90
  4. Step 4: Simplify right side
    262,816.70x = 102,518,973,280.10
  5. Step 5: Solve for x
    x = 102,518,973,280.10/262,816.70
  6. Step 6: Final answer
    x = 390,077.85

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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.