Home / 402,976.86-556,090.52-221,677.30

Finding the Fourth Proportional to 402,976.86, 556,090.52 and 221,677.30

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Solution

The fourth proportional to 402,976.86, 556,090.52 and 221,677.30 is: 305,905.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,976.86 : 556,090.52 = 221,677.30 : x
  2. Step 2: Convert to fraction form
    402,976.86/556,090.52 = 221,677.30/x
  3. Step 3: Cross multiply
    402,976.86x = 556,090.52 × 221,677.30
  4. Step 4: Simplify right side
    402,976.86x = 123,272,644,193.16
  5. Step 5: Solve for x
    x = 123,272,644,193.16/402,976.86
  6. Step 6: Final answer
    x = 305,905.02

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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.