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Finding the Fourth Proportional to 370,314.80, 555,472.20 and 346,986.80

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Solution

The fourth proportional to 370,314.80, 555,472.20 and 346,986.80 is: 520,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,314.80 : 555,472.20 = 346,986.80 : x
  2. Step 2: Convert to fraction form
    370,314.80/555,472.20 = 346,986.80/x
  3. Step 3: Cross multiply
    370,314.80x = 555,472.20 × 346,986.80
  4. Step 4: Simplify right side
    370,314.80x = 192,741,521,166.96
  5. Step 5: Solve for x
    x = 192,741,521,166.96/370,314.80
  6. Step 6: Final answer
    x = 520,480.20

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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.