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Finding the Fourth Proportional to 262,518.76, 393,691.74 and 144,323.56

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Solution

The fourth proportional to 262,518.76, 393,691.74 and 144,323.56 is: 216,437.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,518.76 : 393,691.74 = 144,323.56 : x
  2. Step 2: Convert to fraction form
    262,518.76/393,691.74 = 144,323.56/x
  3. Step 3: Cross multiply
    262,518.76x = 393,691.74 × 144,323.56
  4. Step 4: Simplify right side
    262,518.76x = 56,818,993,459.39
  5. Step 5: Solve for x
    x = 56,818,993,459.39/262,518.76
  6. Step 6: Final answer
    x = 216,437.84

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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.