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Finding the Fourth Proportional to 373,099.67, 514,895.79 and 209,807.55

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Solution

The fourth proportional to 373,099.67, 514,895.79 and 209,807.55 is: 289,544.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,099.67 : 514,895.79 = 209,807.55 : x
  2. Step 2: Convert to fraction form
    373,099.67/514,895.79 = 209,807.55/x
  3. Step 3: Cross multiply
    373,099.67x = 514,895.79 × 209,807.55
  4. Step 4: Simplify right side
    373,099.67x = 108,029,023,811.83
  5. Step 5: Solve for x
    x = 108,029,023,811.83/373,099.67
  6. Step 6: Final answer
    x = 289,544.68

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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.