Home / 438,583.12-605,249.66-257,298.14

Finding the Fourth Proportional to 438,583.12, 605,249.66 and 257,298.14

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Solution

The fourth proportional to 438,583.12, 605,249.66 and 257,298.14 is: 355,074.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,583.12 : 605,249.66 = 257,298.14 : x
  2. Step 2: Convert to fraction form
    438,583.12/605,249.66 = 257,298.14/x
  3. Step 3: Cross multiply
    438,583.12x = 605,249.66 × 257,298.14
  4. Step 4: Simplify right side
    438,583.12x = 155,729,611,753.63
  5. Step 5: Solve for x
    x = 155,729,611,753.63/438,583.12
  6. Step 6: Final answer
    x = 355,074.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.