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Finding the Fourth Proportional to 389,375.04, 537,355.84 and 219,605.76

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Solution

The fourth proportional to 389,375.04, 537,355.84 and 219,605.76 is: 303,066.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,375.04 : 537,355.84 = 219,605.76 : x
  2. Step 2: Convert to fraction form
    389,375.04/537,355.84 = 219,605.76/x
  3. Step 3: Cross multiply
    389,375.04x = 537,355.84 × 219,605.76
  4. Step 4: Simplify right side
    389,375.04x = 118,006,437,633.64
  5. Step 5: Solve for x
    x = 118,006,437,633.64/389,375.04
  6. Step 6: Final answer
    x = 303,066.26

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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.