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Finding the Fourth Proportional to 528,001.80, 791,711.10 and 212,101.80

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Solution

The fourth proportional to 528,001.80, 791,711.10 and 212,101.80 is: 318,035.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,001.80 : 791,711.10 = 212,101.80 : x
  2. Step 2: Convert to fraction form
    528,001.80/791,711.10 = 212,101.80/x
  3. Step 3: Cross multiply
    528,001.80x = 791,711.10 × 212,101.80
  4. Step 4: Simplify right side
    528,001.80x = 167,923,349,389.98
  5. Step 5: Solve for x
    x = 167,923,349,389.98/528,001.80
  6. Step 6: Final answer
    x = 318,035.56

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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.