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Finding the Fourth Proportional to 482,990.10, 666,492.86 and 268,113.30

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Solution

The fourth proportional to 482,990.10, 666,492.86 and 268,113.30 is: 369,977.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,990.10 : 666,492.86 = 268,113.30 : x
  2. Step 2: Convert to fraction form
    482,990.10/666,492.86 = 268,113.30/x
  3. Step 3: Cross multiply
    482,990.10x = 666,492.86 × 268,113.30
  4. Step 4: Simplify right side
    482,990.10x = 178,695,600,121.04
  5. Step 5: Solve for x
    x = 178,695,600,121.04/482,990.10
  6. Step 6: Final answer
    x = 369,977.77

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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.