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Finding the Fourth Proportional to 354,600.96, 489,346.96 and 201,639.16

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Solution

The fourth proportional to 354,600.96, 489,346.96 and 201,639.16 is: 278,260.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,600.96 : 489,346.96 = 201,639.16 : x
  2. Step 2: Convert to fraction form
    354,600.96/489,346.96 = 201,639.16/x
  3. Step 3: Cross multiply
    354,600.96x = 489,346.96 × 201,639.16
  4. Step 4: Simplify right side
    354,600.96x = 98,671,509,962.95
  5. Step 5: Solve for x
    x = 98,671,509,962.95/354,600.96
  6. Step 6: Final answer
    x = 278,260.70

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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.