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Finding the Fourth Proportional to 528,002.80, 791,712.60 and 212,102.80

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Solution

The fourth proportional to 528,002.80, 791,712.60 and 212,102.80 is: 318,037.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,002.80 : 791,712.60 = 212,102.80 : x
  2. Step 2: Convert to fraction form
    528,002.80/791,712.60 = 212,102.80/x
  3. Step 3: Cross multiply
    528,002.80x = 791,712.60 × 212,102.80
  4. Step 4: Simplify right side
    528,002.80x = 167,924,459,255.28
  5. Step 5: Solve for x
    x = 167,924,459,255.28/528,002.80
  6. Step 6: Final answer
    x = 318,037.06

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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.