Home / 393,314.10-542,769.51-218,881.35

Finding the Fourth Proportional to 393,314.10, 542,769.51 and 218,881.35

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Solution

The fourth proportional to 393,314.10, 542,769.51 and 218,881.35 is: 302,054.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,314.10 : 542,769.51 = 218,881.35 : x
  2. Step 2: Convert to fraction form
    393,314.10/542,769.51 = 218,881.35/x
  3. Step 3: Cross multiply
    393,314.10x = 542,769.51 × 218,881.35
  4. Step 4: Simplify right side
    393,314.10x = 118,802,123,087.64
  5. Step 5: Solve for x
    x = 118,802,123,087.64/393,314.10
  6. Step 6: Final answer
    x = 302,054.07

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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.