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Finding the Fourth Proportional to 311,148.54, 429,390.45 and 183,823.83

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Solution

The fourth proportional to 311,148.54, 429,390.45 and 183,823.83 is: 253,680.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,148.54 : 429,390.45 = 183,823.83 : x
  2. Step 2: Convert to fraction form
    311,148.54/429,390.45 = 183,823.83/x
  3. Step 3: Cross multiply
    311,148.54x = 429,390.45 × 183,823.83
  4. Step 4: Simplify right side
    311,148.54x = 78,932,197,084.42
  5. Step 5: Solve for x
    x = 78,932,197,084.42/311,148.54
  6. Step 6: Final answer
    x = 253,680.11

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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.