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Finding the Fourth Proportional to 384,770.30, 530,972.15 and 215,004.42

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Solution

The fourth proportional to 384,770.30, 530,972.15 and 215,004.42 is: 296,700.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,770.30 : 530,972.15 = 215,004.42 : x
  2. Step 2: Convert to fraction form
    384,770.30/530,972.15 = 215,004.42/x
  3. Step 3: Cross multiply
    384,770.30x = 530,972.15 × 215,004.42
  4. Step 4: Simplify right side
    384,770.30x = 114,161,358,071.88
  5. Step 5: Solve for x
    x = 114,161,358,071.88/384,770.30
  6. Step 6: Final answer
    x = 296,700.03

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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.