Home / 354,975.15-489,867.50-193,830.20

Finding the Fourth Proportional to 354,975.15, 489,867.50 and 193,830.20

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Solution

The fourth proportional to 354,975.15, 489,867.50 and 193,830.20 is: 267,486.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,975.15 : 489,867.50 = 193,830.20 : x
  2. Step 2: Convert to fraction form
    354,975.15/489,867.50 = 193,830.20/x
  3. Step 3: Cross multiply
    354,975.15x = 489,867.50 × 193,830.20
  4. Step 4: Simplify right side
    354,975.15x = 94,951,113,533.74
  5. Step 5: Solve for x
    x = 94,951,113,533.74/354,975.15
  6. Step 6: Final answer
    x = 267,486.65

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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.