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Finding the Fourth Proportional to 479,840.70, 719,333.28 and 243,061.50

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Solution

The fourth proportional to 479,840.70, 719,333.28 and 243,061.50 is: 364,375.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,840.70 : 719,333.28 = 243,061.50 : x
  2. Step 2: Convert to fraction form
    479,840.70/719,333.28 = 243,061.50/x
  3. Step 3: Cross multiply
    479,840.70x = 719,333.28 × 243,061.50
  4. Step 4: Simplify right side
    479,840.70x = 174,842,226,036.72
  5. Step 5: Solve for x
    x = 174,842,226,036.72/479,840.70
  6. Step 6: Final answer
    x = 364,375.56

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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.