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Finding the Fourth Proportional to 384,903.61, 531,157.55 and 212,817.04

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Solution

The fourth proportional to 384,903.61, 531,157.55 and 212,817.04 is: 293,682.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,903.61 : 531,157.55 = 212,817.04 : x
  2. Step 2: Convert to fraction form
    384,903.61/531,157.55 = 212,817.04/x
  3. Step 3: Cross multiply
    384,903.61x = 531,157.55 × 212,817.04
  4. Step 4: Simplify right side
    384,903.61x = 113,039,376,768.80
  5. Step 5: Solve for x
    x = 113,039,376,768.80/384,903.61
  6. Step 6: Final answer
    x = 293,682.30

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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.