Home / 621,088.20-931,829.13-221,720.13

Finding the Fourth Proportional to 621,088.20, 931,829.13 and 221,720.13

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Solution

The fourth proportional to 621,088.20, 931,829.13 and 221,720.13 is: 332,650.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,088.20 : 931,829.13 = 221,720.13 : x
  2. Step 2: Convert to fraction form
    621,088.20/931,829.13 = 221,720.13/x
  3. Step 3: Cross multiply
    621,088.20x = 931,829.13 × 221,720.13
  4. Step 4: Simplify right side
    621,088.20x = 206,605,275,841.39
  5. Step 5: Solve for x
    x = 206,605,275,841.39/621,088.20
  6. Step 6: Final answer
    x = 332,650.46

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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.