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Finding the Fourth Proportional to 286,622.76, 395,555.78 and 159,306.42

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Solution

The fourth proportional to 286,622.76, 395,555.78 and 159,306.42 is: 219,851.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,622.76 : 395,555.78 = 159,306.42 : x
  2. Step 2: Convert to fraction form
    286,622.76/395,555.78 = 159,306.42/x
  3. Step 3: Cross multiply
    286,622.76x = 395,555.78 × 159,306.42
  4. Step 4: Simplify right side
    286,622.76x = 63,014,575,222.11
  5. Step 5: Solve for x
    x = 63,014,575,222.11/286,622.76
  6. Step 6: Final answer
    x = 219,851.96

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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.