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Finding the Fourth Proportional to 539,624.50, 809,475.99 and 207,200.50

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Solution

The fourth proportional to 539,624.50, 809,475.99 and 207,200.50 is: 310,815.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,624.50 : 809,475.99 = 207,200.50 : x
  2. Step 2: Convert to fraction form
    539,624.50/809,475.99 = 207,200.50/x
  3. Step 3: Cross multiply
    539,624.50x = 809,475.99 × 207,200.50
  4. Step 4: Simplify right side
    539,624.50x = 167,723,829,866.00
  5. Step 5: Solve for x
    x = 167,723,829,866.00/539,624.50
  6. Step 6: Final answer
    x = 310,815.82

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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.