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Finding the Fourth Proportional to 384,553.84, 530,695 and 212,482.90

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Solution

The fourth proportional to 384,553.84, 530,695 and 212,482.90 is: 293,232.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,553.84 : 530,695 = 212,482.90 : x
  2. Step 2: Convert to fraction form
    384,553.84/530,695 = 212,482.90/x
  3. Step 3: Cross multiply
    384,553.84x = 530,695 × 212,482.90
  4. Step 4: Simplify right side
    384,553.84x = 112,763,612,615.50
  5. Step 5: Solve for x
    x = 112,763,612,615.50/384,553.84
  6. Step 6: Final answer
    x = 293,232.31

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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.