Home / 402,901.14-556,014.06-221,617.74

Finding the Fourth Proportional to 402,901.14, 556,014.06 and 221,617.74

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Solution

The fourth proportional to 402,901.14, 556,014.06 and 221,617.74 is: 305,838.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,901.14 : 556,014.06 = 221,617.74 : x
  2. Step 2: Convert to fraction form
    402,901.14/556,014.06 = 221,617.74/x
  3. Step 3: Cross multiply
    402,901.14x = 556,014.06 × 221,617.74
  4. Step 4: Simplify right side
    402,901.14x = 123,222,579,385.42
  5. Step 5: Solve for x
    x = 123,222,579,385.42/402,901.14
  6. Step 6: Final answer
    x = 305,838.25

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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.