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Finding the Fourth Proportional to 402,726.92, 555,748.93 and 221,437.58

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Solution

The fourth proportional to 402,726.92, 555,748.93 and 221,437.58 is: 305,576.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,726.92 : 555,748.93 = 221,437.58 : x
  2. Step 2: Convert to fraction form
    402,726.92/555,748.93 = 221,437.58/x
  3. Step 3: Cross multiply
    402,726.92x = 555,748.93 × 221,437.58
  4. Step 4: Simplify right side
    402,726.92x = 123,063,698,146.79
  5. Step 5: Solve for x
    x = 123,063,698,146.79/402,726.92
  6. Step 6: Final answer
    x = 305,576.04

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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.