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Finding the Fourth Proportional to 262,007.80, 393,011.70 and 72,467.80

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Solution

The fourth proportional to 262,007.80, 393,011.70 and 72,467.80 is: 108,701.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,007.80 : 393,011.70 = 72,467.80 : x
  2. Step 2: Convert to fraction form
    262,007.80/393,011.70 = 72,467.80/x
  3. Step 3: Cross multiply
    262,007.80x = 393,011.70 × 72,467.80
  4. Step 4: Simplify right side
    262,007.80x = 28,480,693,273.26
  5. Step 5: Solve for x
    x = 28,480,693,273.26/262,007.80
  6. Step 6: Final answer
    x = 108,701.70

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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.