Home / 402,829.46-555,918.62-221,555.10

Finding the Fourth Proportional to 402,829.46, 555,918.62 and 221,555.10

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Solution

The fourth proportional to 402,829.46, 555,918.62 and 221,555.10 is: 305,753.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,829.46 : 555,918.62 = 221,555.10 : x
  2. Step 2: Convert to fraction form
    402,829.46/555,918.62 = 221,555.10/x
  3. Step 3: Cross multiply
    402,829.46x = 555,918.62 × 221,555.10
  4. Step 4: Simplify right side
    402,829.46x = 123,166,604,338.19
  5. Step 5: Solve for x
    x = 123,166,604,338.19/402,829.46
  6. Step 6: Final answer
    x = 305,753.72

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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.