Home / 402,511.16-555,475.59-221,227.70

Finding the Fourth Proportional to 402,511.16, 555,475.59 and 221,227.70

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Solution

The fourth proportional to 402,511.16, 555,475.59 and 221,227.70 is: 305,299.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,511.16 : 555,475.59 = 221,227.70 : x
  2. Step 2: Convert to fraction form
    402,511.16/555,475.59 = 221,227.70/x
  3. Step 3: Cross multiply
    402,511.16x = 555,475.59 × 221,227.70
  4. Step 4: Simplify right side
    402,511.16x = 122,886,584,404.47
  5. Step 5: Solve for x
    x = 122,886,584,404.47/402,511.16
  6. Step 6: Final answer
    x = 305,299.82

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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.