Home / 402,492.20-555,412.26-221,200.16

Finding the Fourth Proportional to 402,492.20, 555,412.26 and 221,200.16

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Solution

The fourth proportional to 402,492.20, 555,412.26 and 221,200.16 is: 305,241.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,492.20 : 555,412.26 = 221,200.16 : x
  2. Step 2: Convert to fraction form
    402,492.20/555,412.26 = 221,200.16/x
  3. Step 3: Cross multiply
    402,492.20x = 555,412.26 × 221,200.16
  4. Step 4: Simplify right side
    402,492.20x = 122,857,280,777.96
  5. Step 5: Solve for x
    x = 122,857,280,777.96/402,492.20
  6. Step 6: Final answer
    x = 305,241.40

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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.