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Finding the Fourth Proportional to 306,715.80, 459,089.55 and 239,793.60

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Solution

The fourth proportional to 306,715.80, 459,089.55 and 239,793.60 is: 358,920.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,715.80 : 459,089.55 = 239,793.60 : x
  2. Step 2: Convert to fraction form
    306,715.80/459,089.55 = 239,793.60/x
  3. Step 3: Cross multiply
    306,715.80x = 459,089.55 × 239,793.60
  4. Step 4: Simplify right side
    306,715.80x = 110,086,735,916.88
  5. Step 5: Solve for x
    x = 110,086,735,916.88/306,715.80
  6. Step 6: Final answer
    x = 358,920.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.