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Finding the Fourth Proportional to 408,316.92, 612,599.70 and 208,777.46

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Solution

The fourth proportional to 408,316.92, 612,599.70 and 208,777.46 is: 313,229.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,316.92 : 612,599.70 = 208,777.46 : x
  2. Step 2: Convert to fraction form
    408,316.92/612,599.70 = 208,777.46/x
  3. Step 3: Cross multiply
    408,316.92x = 612,599.70 × 208,777.46
  4. Step 4: Simplify right side
    408,316.92x = 127,897,009,362.76
  5. Step 5: Solve for x
    x = 127,897,009,362.76/408,316.92
  6. Step 6: Final answer
    x = 313,229.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.