Home / 257,066.11-385,615.47-79,558.21

Finding the Fourth Proportional to 257,066.11, 385,615.47 and 79,558.21

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Solution

The fourth proportional to 257,066.11, 385,615.47 and 79,558.21 is: 119,342.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,066.11 : 385,615.47 = 79,558.21 : x
  2. Step 2: Convert to fraction form
    257,066.11/385,615.47 = 79,558.21/x
  3. Step 3: Cross multiply
    257,066.11x = 385,615.47 × 79,558.21
  4. Step 4: Simplify right side
    257,066.11x = 30,678,876,541.51
  5. Step 5: Solve for x
    x = 30,678,876,541.51/257,066.11
  6. Step 6: Final answer
    x = 119,342.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.