Home / 817,666.80-1,226,500.20-218,720.40

Finding the Fourth Proportional to 817,666.80, 1,226,500.20 and 218,720.40

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Solution

The fourth proportional to 817,666.80, 1,226,500.20 and 218,720.40 is: 328,080.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,666.80 : 1,226,500.20 = 218,720.40 : x
  2. Step 2: Convert to fraction form
    817,666.80/1,226,500.20 = 218,720.40/x
  3. Step 3: Cross multiply
    817,666.80x = 1,226,500.20 × 218,720.40
  4. Step 4: Simplify right side
    817,666.80x = 268,260,614,344.08
  5. Step 5: Solve for x
    x = 268,260,614,344.08/817,666.80
  6. Step 6: Final answer
    x = 328,080.60

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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.