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Finding the Fourth Proportional to 370,059.20, 510,683.52 and 208,920.80

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Solution

The fourth proportional to 370,059.20, 510,683.52 and 208,920.80 is: 288,311.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,059.20 : 510,683.52 = 208,920.80 : x
  2. Step 2: Convert to fraction form
    370,059.20/510,683.52 = 208,920.80/x
  3. Step 3: Cross multiply
    370,059.20x = 510,683.52 × 208,920.80
  4. Step 4: Simplify right side
    370,059.20x = 106,692,409,545.22
  5. Step 5: Solve for x
    x = 106,692,409,545.22/370,059.20
  6. Step 6: Final answer
    x = 288,311.73

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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.