Home / 297,386.10-409,355.63-256,679.37

Finding the Fourth Proportional to 297,386.10, 409,355.63 and 256,679.37

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Solution

The fourth proportional to 297,386.10, 409,355.63 and 256,679.37 is: 353,322.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,386.10 : 409,355.63 = 256,679.37 : x
  2. Step 2: Convert to fraction form
    297,386.10/409,355.63 = 256,679.37/x
  3. Step 3: Cross multiply
    297,386.10x = 409,355.63 × 256,679.37
  4. Step 4: Simplify right side
    297,386.10x = 105,073,145,856.05
  5. Step 5: Solve for x
    x = 105,073,145,856.05/297,386.10
  6. Step 6: Final answer
    x = 353,322.31

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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.