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Finding the Fourth Proportional to 370,297.80, 555,446.70 and 346,969.80

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Solution

The fourth proportional to 370,297.80, 555,446.70 and 346,969.80 is: 520,454.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,297.80 : 555,446.70 = 346,969.80 : x
  2. Step 2: Convert to fraction form
    370,297.80/555,446.70 = 346,969.80/x
  3. Step 3: Cross multiply
    370,297.80x = 555,446.70 × 346,969.80
  4. Step 4: Simplify right side
    370,297.80x = 192,723,230,409.66
  5. Step 5: Solve for x
    x = 192,723,230,409.66/370,297.80
  6. Step 6: Final answer
    x = 520,454.70

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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.