Home / 402,898.19-556,000.61-221,628.69

Finding the Fourth Proportional to 402,898.19, 556,000.61 and 221,628.69

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Solution

The fourth proportional to 402,898.19, 556,000.61 and 221,628.69 is: 305,848.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,898.19 : 556,000.61 = 221,628.69 : x
  2. Step 2: Convert to fraction form
    402,898.19/556,000.61 = 221,628.69/x
  3. Step 3: Cross multiply
    402,898.19x = 556,000.61 × 221,628.69
  4. Step 4: Simplify right side
    402,898.19x = 123,225,685,725.36
  5. Step 5: Solve for x
    x = 123,225,685,725.36/402,898.19
  6. Step 6: Final answer
    x = 305,848.20

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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.