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Finding the Fourth Proportional to 354,603.16, 489,332.46 and 201,619.90

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Solution

The fourth proportional to 354,603.16, 489,332.46 and 201,619.90 is: 278,224.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,603.16 : 489,332.46 = 201,619.90 : x
  2. Step 2: Convert to fraction form
    354,603.16/489,332.46 = 201,619.90/x
  3. Step 3: Cross multiply
    354,603.16x = 489,332.46 × 201,619.90
  4. Step 4: Simplify right side
    354,603.16x = 98,659,161,651.95
  5. Step 5: Solve for x
    x = 98,659,161,651.95/354,603.16
  6. Step 6: Final answer
    x = 278,224.15

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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.