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Finding the Fourth Proportional to 379,470.30, 569,032.65 and 168,999.90

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Solution

The fourth proportional to 379,470.30, 569,032.65 and 168,999.90 is: 253,422.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,470.30 : 569,032.65 = 168,999.90 : x
  2. Step 2: Convert to fraction form
    379,470.30/569,032.65 = 168,999.90/x
  3. Step 3: Cross multiply
    379,470.30x = 569,032.65 × 168,999.90
  4. Step 4: Simplify right side
    379,470.30x = 96,166,460,946.74
  5. Step 5: Solve for x
    x = 96,166,460,946.74/379,470.30
  6. Step 6: Final answer
    x = 253,422.89

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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.