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Finding the Fourth Proportional to 393,317.66, 542,774.43 and 218,884.92

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Solution

The fourth proportional to 393,317.66, 542,774.43 and 218,884.92 is: 302,059.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,317.66 : 542,774.43 = 218,884.92 : x
  2. Step 2: Convert to fraction form
    393,317.66/542,774.43 = 218,884.92/x
  3. Step 3: Cross multiply
    393,317.66x = 542,774.43 × 218,884.92
  4. Step 4: Simplify right side
    393,317.66x = 118,805,137,688.60
  5. Step 5: Solve for x
    x = 118,805,137,688.60/393,317.66
  6. Step 6: Final answer
    x = 302,059.00

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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.