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Finding the Fourth Proportional to 262,137.20, 393,497.40 and 144,039.20

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Solution

The fourth proportional to 262,137.20, 393,497.40 and 144,039.20 is: 216,219.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,137.20 : 393,497.40 = 144,039.20 : x
  2. Step 2: Convert to fraction form
    262,137.20/393,497.40 = 144,039.20/x
  3. Step 3: Cross multiply
    262,137.20x = 393,497.40 × 144,039.20
  4. Step 4: Simplify right side
    262,137.20x = 56,679,050,698.08
  5. Step 5: Solve for x
    x = 56,679,050,698.08/262,137.20
  6. Step 6: Final answer
    x = 216,219.03

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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.