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Finding the Fourth Proportional to 361,366.72, 498,704.64 and 218,124.80

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Solution

The fourth proportional to 361,366.72, 498,704.64 and 218,124.80 is: 301,023.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,366.72 : 498,704.64 = 218,124.80 : x
  2. Step 2: Convert to fraction form
    361,366.72/498,704.64 = 218,124.80/x
  3. Step 3: Cross multiply
    361,366.72x = 498,704.64 × 218,124.80
  4. Step 4: Simplify right side
    361,366.72x = 108,779,849,859.07
  5. Step 5: Solve for x
    x = 108,779,849,859.07/361,366.72
  6. Step 6: Final answer
    x = 301,023.43

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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.