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Finding the Fourth Proportional to 354,403.32, 489,062.90 and 201,461.63

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Solution

The fourth proportional to 354,403.32, 489,062.90 and 201,461.63 is: 278,009.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,403.32 : 489,062.90 = 201,461.63 : x
  2. Step 2: Convert to fraction form
    354,403.32/489,062.90 = 201,461.63/x
  3. Step 3: Cross multiply
    354,403.32x = 489,062.90 × 201,461.63
  4. Step 4: Simplify right side
    354,403.32x = 98,527,405,553.90
  5. Step 5: Solve for x
    x = 98,527,405,553.90/354,403.32
  6. Step 6: Final answer
    x = 278,009.26

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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.