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Finding the Fourth Proportional to 354,686.06, 489,465 and 193,540.61

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Solution

The fourth proportional to 354,686.06, 489,465 and 193,540.61 is: 267,085.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,686.06 : 489,465 = 193,540.61 : x
  2. Step 2: Convert to fraction form
    354,686.06/489,465 = 193,540.61/x
  3. Step 3: Cross multiply
    354,686.06x = 489,465 × 193,540.61
  4. Step 4: Simplify right side
    354,686.06x = 94,731,355,897.31
  5. Step 5: Solve for x
    x = 94,731,355,897.31/354,686.06
  6. Step 6: Final answer
    x = 267,085.08

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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.