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Finding the Fourth Proportional to 561,211.15, 774,458.80 and 306,563.35

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Solution

The fourth proportional to 561,211.15, 774,458.80 and 306,563.35 is: 423,050.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,211.15 : 774,458.80 = 306,563.35 : x
  2. Step 2: Convert to fraction form
    561,211.15/774,458.80 = 306,563.35/x
  3. Step 3: Cross multiply
    561,211.15x = 774,458.80 × 306,563.35
  4. Step 4: Simplify right side
    561,211.15x = 237,420,684,164.98
  5. Step 5: Solve for x
    x = 237,420,684,164.98/561,211.15
  6. Step 6: Final answer
    x = 423,050.55

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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.