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Finding the Fourth Proportional to 399,280.50, 550,944.45 and 229,482.90

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Solution

The fourth proportional to 399,280.50, 550,944.45 and 229,482.90 is: 316,650.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,280.50 : 550,944.45 = 229,482.90 : x
  2. Step 2: Convert to fraction form
    399,280.50/550,944.45 = 229,482.90/x
  3. Step 3: Cross multiply
    399,280.50x = 550,944.45 × 229,482.90
  4. Step 4: Simplify right side
    399,280.50x = 126,432,330,124.91
  5. Step 5: Solve for x
    x = 126,432,330,124.91/399,280.50
  6. Step 6: Final answer
    x = 316,650.40

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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.