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Finding the Fourth Proportional to 260,612.50, 390,919.56 and 63,620.50

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Solution

The fourth proportional to 260,612.50, 390,919.56 and 63,620.50 is: 95,430.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,612.50 : 390,919.56 = 63,620.50 : x
  2. Step 2: Convert to fraction form
    260,612.50/390,919.56 = 63,620.50/x
  3. Step 3: Cross multiply
    260,612.50x = 390,919.56 × 63,620.50
  4. Step 4: Simplify right side
    260,612.50x = 24,870,497,866.98
  5. Step 5: Solve for x
    x = 24,870,497,866.98/260,612.50
  6. Step 6: Final answer
    x = 95,430.95

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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.