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Finding the Fourth Proportional to 515,569.10, 773,345.10 and 211,901.72

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Solution

The fourth proportional to 515,569.10, 773,345.10 and 211,901.72 is: 317,849.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,569.10 : 773,345.10 = 211,901.72 : x
  2. Step 2: Convert to fraction form
    515,569.10/773,345.10 = 211,901.72/x
  3. Step 3: Cross multiply
    515,569.10x = 773,345.10 × 211,901.72
  4. Step 4: Simplify right side
    515,569.10x = 163,873,156,843.57
  5. Step 5: Solve for x
    x = 163,873,156,843.57/515,569.10
  6. Step 6: Final answer
    x = 317,849.07

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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.