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Finding the Fourth Proportional to 415,359.20, 623,006.40 and 162,590.60

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Solution

The fourth proportional to 415,359.20, 623,006.40 and 162,590.60 is: 243,873.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,359.20 : 623,006.40 = 162,590.60 : x
  2. Step 2: Convert to fraction form
    415,359.20/623,006.40 = 162,590.60/x
  3. Step 3: Cross multiply
    415,359.20x = 623,006.40 × 162,590.60
  4. Step 4: Simplify right side
    415,359.20x = 101,294,984,379.84
  5. Step 5: Solve for x
    x = 101,294,984,379.84/415,359.20
  6. Step 6: Final answer
    x = 243,873.22

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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.