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Finding the Fourth Proportional to 493,670.60, 740,505.90 and 161,280.20

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Solution

The fourth proportional to 493,670.60, 740,505.90 and 161,280.20 is: 241,920.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,670.60 : 740,505.90 = 161,280.20 : x
  2. Step 2: Convert to fraction form
    493,670.60/740,505.90 = 161,280.20/x
  3. Step 3: Cross multiply
    493,670.60x = 740,505.90 × 161,280.20
  4. Step 4: Simplify right side
    493,670.60x = 119,428,939,653.18
  5. Step 5: Solve for x
    x = 119,428,939,653.18/493,670.60
  6. Step 6: Final answer
    x = 241,920.30

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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.