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Finding the Fourth Proportional to 402,901.04, 555,991.66 and 221,612.91

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Solution

The fourth proportional to 402,901.04, 555,991.66 and 221,612.91 is: 305,819.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,901.04 : 555,991.66 = 221,612.91 : x
  2. Step 2: Convert to fraction form
    402,901.04/555,991.66 = 221,612.91/x
  3. Step 3: Cross multiply
    402,901.04x = 555,991.66 × 221,612.91
  4. Step 4: Simplify right side
    402,901.04x = 123,214,929,708.33
  5. Step 5: Solve for x
    x = 123,214,929,708.33/402,901.04
  6. Step 6: Final answer
    x = 305,819.34

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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.