Home / 393,319.96-542,828.16-223,579.60

Finding the Fourth Proportional to 393,319.96, 542,828.16 and 223,579.60

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Solution

The fourth proportional to 393,319.96, 542,828.16 and 223,579.60 is: 308,566.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,319.96 : 542,828.16 = 223,579.60 : x
  2. Step 2: Convert to fraction form
    393,319.96/542,828.16 = 223,579.60/x
  3. Step 3: Cross multiply
    393,319.96x = 542,828.16 × 223,579.60
  4. Step 4: Simplify right side
    393,319.96x = 121,365,302,881.54
  5. Step 5: Solve for x
    x = 121,365,302,881.54/393,319.96
  6. Step 6: Final answer
    x = 308,566.35

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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.