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Finding the Fourth Proportional to 219,210.80, 328,816.20 and 52,998.80

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Solution

The fourth proportional to 219,210.80, 328,816.20 and 52,998.80 is: 79,498.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,210.80 : 328,816.20 = 52,998.80 : x
  2. Step 2: Convert to fraction form
    219,210.80/328,816.20 = 52,998.80/x
  3. Step 3: Cross multiply
    219,210.80x = 328,816.20 × 52,998.80
  4. Step 4: Simplify right side
    219,210.80x = 17,426,864,020.56
  5. Step 5: Solve for x
    x = 17,426,864,020.56/219,210.80
  6. Step 6: Final answer
    x = 79,498.20

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1.5x scale

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.