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Finding the Fourth Proportional to 210,236.60, 315,346.02 and 97,878.20

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Solution

The fourth proportional to 210,236.60, 315,346.02 and 97,878.20 is: 146,813.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,236.60 : 315,346.02 = 97,878.20 : x
  2. Step 2: Convert to fraction form
    210,236.60/315,346.02 = 97,878.20/x
  3. Step 3: Cross multiply
    210,236.60x = 315,346.02 × 97,878.20
  4. Step 4: Simplify right side
    210,236.60x = 30,865,500,814.76
  5. Step 5: Solve for x
    x = 30,865,500,814.76/210,236.60
  6. Step 6: Final answer
    x = 146,813.17

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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.