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Finding the Fourth Proportional to 354,464.21, 489,158.38 and 201,502.41

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Solution

The fourth proportional to 354,464.21, 489,158.38 and 201,502.41 is: 278,072.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,464.21 : 489,158.38 = 201,502.41 : x
  2. Step 2: Convert to fraction form
    354,464.21/489,158.38 = 201,502.41/x
  3. Step 3: Cross multiply
    354,464.21x = 489,158.38 × 201,502.41
  4. Step 4: Simplify right side
    354,464.21x = 98,566,592,477.29
  5. Step 5: Solve for x
    x = 98,566,592,477.29/354,464.21
  6. Step 6: Final answer
    x = 278,072.05

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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.