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Finding the Fourth Proportional to 520,072.35, 780,108.53 and 146,095.35

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Solution

The fourth proportional to 520,072.35, 780,108.53 and 146,095.35 is: 219,143.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,072.35 : 780,108.53 = 146,095.35 : x
  2. Step 2: Convert to fraction form
    520,072.35/780,108.53 = 146,095.35/x
  3. Step 3: Cross multiply
    520,072.35x = 780,108.53 × 146,095.35
  4. Step 4: Simplify right side
    520,072.35x = 113,970,227,997.86
  5. Step 5: Solve for x
    x = 113,970,227,997.86/520,072.35
  6. Step 6: Final answer
    x = 219,143.03

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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.