Home / 402,331.20-555,226.32-221,054.44

Finding the Fourth Proportional to 402,331.20, 555,226.32 and 221,054.44

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Solution

The fourth proportional to 402,331.20, 555,226.32 and 221,054.44 is: 305,060.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,331.20 : 555,226.32 = 221,054.44 : x
  2. Step 2: Convert to fraction form
    402,331.20/555,226.32 = 221,054.44/x
  3. Step 3: Cross multiply
    402,331.20x = 555,226.32 × 221,054.44
  4. Step 4: Simplify right side
    402,331.20x = 122,735,243,240.86
  5. Step 5: Solve for x
    x = 122,735,243,240.86/402,331.20
  6. Step 6: Final answer
    x = 305,060.22

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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.