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Finding the Fourth Proportional to 210,005.80, 315,008.70 and 119,956.08

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Solution

The fourth proportional to 210,005.80, 315,008.70 and 119,956.08 is: 179,934.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,005.80 : 315,008.70 = 119,956.08 : x
  2. Step 2: Convert to fraction form
    210,005.80/315,008.70 = 119,956.08/x
  3. Step 3: Cross multiply
    210,005.80x = 315,008.70 × 119,956.08
  4. Step 4: Simplify right side
    210,005.80x = 37,787,208,817.90
  5. Step 5: Solve for x
    x = 37,787,208,817.90/210,005.80
  6. Step 6: Final answer
    x = 179,934.12

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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.