Home / 393,213.16-542,627.61-218,776.63

Finding the Fourth Proportional to 393,213.16, 542,627.61 and 218,776.63

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Solution

The fourth proportional to 393,213.16, 542,627.61 and 218,776.63 is: 301,908.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,213.16 : 542,627.61 = 218,776.63 : x
  2. Step 2: Convert to fraction form
    393,213.16/542,627.61 = 218,776.63/x
  3. Step 3: Cross multiply
    393,213.16x = 542,627.61 × 218,776.63
  4. Step 4: Simplify right side
    393,213.16x = 118,714,239,860.75
  5. Step 5: Solve for x
    x = 118,714,239,860.75/393,213.16
  6. Step 6: Final answer
    x = 301,908.10

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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.