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Finding the Fourth Proportional to 516,507.72, 774,775.44 and 161,521.74

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Solution

The fourth proportional to 516,507.72, 774,775.44 and 161,521.74 is: 242,286.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,507.72 : 774,775.44 = 161,521.74 : x
  2. Step 2: Convert to fraction form
    516,507.72/774,775.44 = 161,521.74/x
  3. Step 3: Cross multiply
    516,507.72x = 774,775.44 × 161,521.74
  4. Step 4: Simplify right side
    516,507.72x = 125,143,077,178.07
  5. Step 5: Solve for x
    x = 125,143,077,178.07/516,507.72
  6. Step 6: Final answer
    x = 242,286.94

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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.