Home / 354,835.40-489,672.64-193,690.40

Finding the Fourth Proportional to 354,835.40, 489,672.64 and 193,690.40

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Solution

The fourth proportional to 354,835.40, 489,672.64 and 193,690.40 is: 267,292.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,835.40 : 489,672.64 = 193,690.40 : x
  2. Step 2: Convert to fraction form
    354,835.40/489,672.64 = 193,690.40/x
  3. Step 3: Cross multiply
    354,835.40x = 489,672.64 × 193,690.40
  4. Step 4: Simplify right side
    354,835.40x = 94,844,890,747.42
  5. Step 5: Solve for x
    x = 94,844,890,747.42/354,835.40
  6. Step 6: Final answer
    x = 267,292.64

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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.