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Finding the Fourth Proportional to 354,603.66, 489,333.15 and 201,620.40

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Solution

The fourth proportional to 354,603.66, 489,333.15 and 201,620.40 is: 278,224.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,603.66 : 489,333.15 = 201,620.40 : x
  2. Step 2: Convert to fraction form
    354,603.66/489,333.15 = 201,620.40/x
  3. Step 3: Cross multiply
    354,603.66x = 489,333.15 × 201,620.40
  4. Step 4: Simplify right side
    354,603.66x = 98,659,545,436.26
  5. Step 5: Solve for x
    x = 98,659,545,436.26/354,603.66
  6. Step 6: Final answer
    x = 278,224.84

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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.