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Finding the Fourth Proportional to 384,996.60, 531,307.50 and 215,230.20

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Solution

The fourth proportional to 384,996.60, 531,307.50 and 215,230.20 is: 297,024.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,996.60 : 531,307.50 = 215,230.20 : x
  2. Step 2: Convert to fraction form
    384,996.60/531,307.50 = 215,230.20/x
  3. Step 3: Cross multiply
    384,996.60x = 531,307.50 × 215,230.20
  4. Step 4: Simplify right side
    384,996.60x = 114,353,419,486.50
  5. Step 5: Solve for x
    x = 114,353,419,486.50/384,996.60
  6. Step 6: Final answer
    x = 297,024.49

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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.