Home / 402,977.11-556,090.87-221,677.55

Finding the Fourth Proportional to 402,977.11, 556,090.87 and 221,677.55

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Solution

The fourth proportional to 402,977.11, 556,090.87 and 221,677.55 is: 305,905.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,977.11 : 556,090.87 = 221,677.55 : x
  2. Step 2: Convert to fraction form
    402,977.11/556,090.87 = 221,677.55/x
  3. Step 3: Cross multiply
    402,977.11x = 556,090.87 × 221,677.55
  4. Step 4: Simplify right side
    402,977.11x = 123,272,860,530.58
  5. Step 5: Solve for x
    x = 123,272,860,530.58/402,977.11
  6. Step 6: Final answer
    x = 305,905.37

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1.5x scale

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.