Home / 402,968.17-556,078.50-221,668.60

Finding the Fourth Proportional to 402,968.17, 556,078.50 and 221,668.60

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Solution

The fourth proportional to 402,968.17, 556,078.50 and 221,668.60 is: 305,893.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,968.17 : 556,078.50 = 221,668.60 : x
  2. Step 2: Convert to fraction form
    402,968.17/556,078.50 = 221,668.60/x
  3. Step 3: Cross multiply
    402,968.17x = 556,078.50 × 221,668.60
  4. Step 4: Simplify right side
    402,968.17x = 123,265,141,749.08
  5. Step 5: Solve for x
    x = 123,265,141,749.08/402,968.17
  6. Step 6: Final answer
    x = 305,893.00

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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.