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Finding the Fourth Proportional to 508,821.60, 702,168.91 and 279,376.89

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Solution

The fourth proportional to 508,821.60, 702,168.91 and 279,376.89 is: 385,537.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,821.60 : 702,168.91 = 279,376.89 : x
  2. Step 2: Convert to fraction form
    508,821.60/702,168.91 = 279,376.89/x
  3. Step 3: Cross multiply
    508,821.60x = 702,168.91 × 279,376.89
  4. Step 4: Simplify right side
    508,821.60x = 196,169,766,330.49
  5. Step 5: Solve for x
    x = 196,169,766,330.49/508,821.60
  6. Step 6: Final answer
    x = 385,537.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.