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Finding the Fourth Proportional to 354,390.76, 489,146.34 and 273,695.32

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Solution

The fourth proportional to 354,390.76, 489,146.34 and 273,695.32 is: 377,766.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,390.76 : 489,146.34 = 273,695.32 : x
  2. Step 2: Convert to fraction form
    354,390.76/489,146.34 = 273,695.32/x
  3. Step 3: Cross multiply
    354,390.76x = 489,146.34 × 273,695.32
  4. Step 4: Simplify right side
    354,390.76x = 133,877,064,053.13
  5. Step 5: Solve for x
    x = 133,877,064,053.13/354,390.76
  6. Step 6: Final answer
    x = 377,766.80

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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.