Home / 402,956.10-556,070.40-221,664.06

Finding the Fourth Proportional to 402,956.10, 556,070.40 and 221,664.06

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Solution

The fourth proportional to 402,956.10, 556,070.40 and 221,664.06 is: 305,891.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,956.10 : 556,070.40 = 221,664.06 : x
  2. Step 2: Convert to fraction form
    402,956.10/556,070.40 = 221,664.06/x
  3. Step 3: Cross multiply
    402,956.10x = 556,070.40 × 221,664.06
  4. Step 4: Simplify right side
    402,956.10x = 123,260,822,509.82
  5. Step 5: Solve for x
    x = 123,260,822,509.82/402,956.10
  6. Step 6: Final answer
    x = 305,891.44

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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.