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Finding the Fourth Proportional to 515,366.32, 772,822.86 and 211,551.88

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Solution

The fourth proportional to 515,366.32, 772,822.86 and 211,551.88 is: 317,234.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,366.32 : 772,822.86 = 211,551.88 : x
  2. Step 2: Convert to fraction form
    515,366.32/772,822.86 = 211,551.88/x
  3. Step 3: Cross multiply
    515,366.32x = 772,822.86 × 211,551.88
  4. Step 4: Simplify right side
    515,366.32x = 163,492,128,939.98
  5. Step 5: Solve for x
    x = 163,492,128,939.98/515,366.32
  6. Step 6: Final answer
    x = 317,234.80

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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.