Home / 402,968.48-556,078.94-221,668.91

Finding the Fourth Proportional to 402,968.48, 556,078.94 and 221,668.91

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Solution

The fourth proportional to 402,968.48, 556,078.94 and 221,668.91 is: 305,893.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,968.48 : 556,078.94 = 221,668.91 : x
  2. Step 2: Convert to fraction form
    402,968.48/556,078.94 = 221,668.91/x
  3. Step 3: Cross multiply
    402,968.48x = 556,078.94 × 221,668.91
  4. Step 4: Simplify right side
    402,968.48x = 123,265,411,395.41
  5. Step 5: Solve for x
    x = 123,265,411,395.41/402,968.48
  6. Step 6: Final answer
    x = 305,893.43

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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.