Home / 402,441.21-555,332.76-221,151.06

Finding the Fourth Proportional to 402,441.21, 555,332.76 and 221,151.06

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Solution

The fourth proportional to 402,441.21, 555,332.76 and 221,151.06 is: 305,168.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,441.21 : 555,332.76 = 221,151.06 : x
  2. Step 2: Convert to fraction form
    402,441.21/555,332.76 = 221,151.06/x
  3. Step 3: Cross multiply
    402,441.21x = 555,332.76 × 221,151.06
  4. Step 4: Simplify right side
    402,441.21x = 122,812,428,526.73
  5. Step 5: Solve for x
    x = 122,812,428,526.73/402,441.21
  6. Step 6: Final answer
    x = 305,168.62

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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.