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Finding the Fourth Proportional to 402,776.44, 555,830.58 and 221,499.52

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Solution

The fourth proportional to 402,776.44, 555,830.58 and 221,499.52 is: 305,668.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,776.44 : 555,830.58 = 221,499.52 : x
  2. Step 2: Convert to fraction form
    402,776.44/555,830.58 = 221,499.52/x
  3. Step 3: Cross multiply
    402,776.44x = 555,830.58 × 221,499.52
  4. Step 4: Simplify right side
    402,776.44x = 123,116,206,671.32
  5. Step 5: Solve for x
    x = 123,116,206,671.32/402,776.44
  6. Step 6: Final answer
    x = 305,668.84

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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.