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Finding the Fourth Proportional to 531,215.52, 733,056.03 and 289,492.90

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Solution

The fourth proportional to 531,215.52, 733,056.03 and 289,492.90 is: 399,488.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,215.52 : 733,056.03 = 289,492.90 : x
  2. Step 2: Convert to fraction form
    531,215.52/733,056.03 = 289,492.90/x
  3. Step 3: Cross multiply
    531,215.52x = 733,056.03 × 289,492.90
  4. Step 4: Simplify right side
    531,215.52x = 212,214,517,819.83
  5. Step 5: Solve for x
    x = 212,214,517,819.83/531,215.52
  6. Step 6: Final answer
    x = 399,488.55

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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.