Home / 338,918.79-508,391.43-102,261.51

Finding the Fourth Proportional to 338,918.79, 508,391.43 and 102,261.51

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Solution

The fourth proportional to 338,918.79, 508,391.43 and 102,261.51 is: 153,396.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,918.79 : 508,391.43 = 102,261.51 : x
  2. Step 2: Convert to fraction form
    338,918.79/508,391.43 = 102,261.51/x
  3. Step 3: Cross multiply
    338,918.79x = 508,391.43 × 102,261.51
  4. Step 4: Simplify right side
    338,918.79x = 51,988,875,302.86
  5. Step 5: Solve for x
    x = 51,988,875,302.86/338,918.79
  6. Step 6: Final answer
    x = 153,396.26

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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.