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Finding the Fourth Proportional to 215,379.56, 297,484.97 and 157,935.98

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Solution

The fourth proportional to 215,379.56, 297,484.97 and 157,935.98 is: 218,143.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,379.56 : 297,484.97 = 157,935.98 : x
  2. Step 2: Convert to fraction form
    215,379.56/297,484.97 = 157,935.98/x
  3. Step 3: Cross multiply
    215,379.56x = 297,484.97 × 157,935.98
  4. Step 4: Simplify right side
    215,379.56x = 46,983,577,995.12
  5. Step 5: Solve for x
    x = 46,983,577,995.12/215,379.56
  6. Step 6: Final answer
    x = 218,143.17

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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.