Home / 402,334.55-555,231.45-221,058.23

Finding the Fourth Proportional to 402,334.55, 555,231.45 and 221,058.23

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Solution

The fourth proportional to 402,334.55, 555,231.45 and 221,058.23 is: 305,065.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,334.55 : 555,231.45 = 221,058.23 : x
  2. Step 2: Convert to fraction form
    402,334.55/555,231.45 = 221,058.23/x
  3. Step 3: Cross multiply
    402,334.55x = 555,231.45 × 221,058.23
  4. Step 4: Simplify right side
    402,334.55x = 122,738,478,801.18
  5. Step 5: Solve for x
    x = 122,738,478,801.18/402,334.55
  6. Step 6: Final answer
    x = 305,065.72

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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.