Home / 285,437.28-393,530-245,579.18

Finding the Fourth Proportional to 285,437.28, 393,530 and 245,579.18

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Solution

The fourth proportional to 285,437.28, 393,530 and 245,579.18 is: 338,577.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,437.28 : 393,530 = 245,579.18 : x
  2. Step 2: Convert to fraction form
    285,437.28/393,530 = 245,579.18/x
  3. Step 3: Cross multiply
    285,437.28x = 393,530 × 245,579.18
  4. Step 4: Simplify right side
    285,437.28x = 96,642,774,705.40
  5. Step 5: Solve for x
    x = 96,642,774,705.40/285,437.28
  6. Step 6: Final answer
    x = 338,577.97

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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.