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Finding the Fourth Proportional to 354,605.40, 489,677.40 and 263,928.24

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Solution

The fourth proportional to 354,605.40, 489,677.40 and 263,928.24 is: 364,460.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,605.40 : 489,677.40 = 263,928.24 : x
  2. Step 2: Convert to fraction form
    354,605.40/489,677.40 = 263,928.24/x
  3. Step 3: Cross multiply
    354,605.40x = 489,677.40 × 263,928.24
  4. Step 4: Simplify right side
    354,605.40x = 129,239,694,349.78
  5. Step 5: Solve for x
    x = 129,239,694,349.78/354,605.40
  6. Step 6: Final answer
    x = 364,460.59

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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.