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Finding the Fourth Proportional to 580,666.50, 870,999.75 and 159,942.42

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Solution

The fourth proportional to 580,666.50, 870,999.75 and 159,942.42 is: 239,913.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,666.50 : 870,999.75 = 159,942.42 : x
  2. Step 2: Convert to fraction form
    580,666.50/870,999.75 = 159,942.42/x
  3. Step 3: Cross multiply
    580,666.50x = 870,999.75 × 159,942.42
  4. Step 4: Simplify right side
    580,666.50x = 139,309,807,834.40
  5. Step 5: Solve for x
    x = 139,309,807,834.40/580,666.50
  6. Step 6: Final answer
    x = 239,913.63

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Similar ratio
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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.