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Finding the Fourth Proportional to 354,780.72, 489,598.74 and 193,639.32

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Solution

The fourth proportional to 354,780.72, 489,598.74 and 193,639.32 is: 267,223.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,780.72 : 489,598.74 = 193,639.32 : x
  2. Step 2: Convert to fraction form
    354,780.72/489,598.74 = 193,639.32/x
  3. Step 3: Cross multiply
    354,780.72x = 489,598.74 × 193,639.32
  4. Step 4: Simplify right side
    354,780.72x = 94,805,567,086.46
  5. Step 5: Solve for x
    x = 94,805,567,086.46/354,780.72
  6. Step 6: Final answer
    x = 267,223.00

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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.