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Finding the Fourth Proportional to 210,641.16, 315,930.58 and 77,490.27

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Solution

The fourth proportional to 210,641.16, 315,930.58 and 77,490.27 is: 116,223.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,641.16 : 315,930.58 = 77,490.27 : x
  2. Step 2: Convert to fraction form
    210,641.16/315,930.58 = 77,490.27/x
  3. Step 3: Cross multiply
    210,641.16x = 315,930.58 × 77,490.27
  4. Step 4: Simplify right side
    210,641.16x = 24,481,545,558.01
  5. Step 5: Solve for x
    x = 24,481,545,558.01/210,641.16
  6. Step 6: Final answer
    x = 116,223.94

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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.