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Finding the Fourth Proportional to 286,873.80, 430,310.70 and 181,811.40

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Solution

The fourth proportional to 286,873.80, 430,310.70 and 181,811.40 is: 272,717.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,873.80 : 430,310.70 = 181,811.40 : x
  2. Step 2: Convert to fraction form
    286,873.80/430,310.70 = 181,811.40/x
  3. Step 3: Cross multiply
    286,873.80x = 430,310.70 × 181,811.40
  4. Step 4: Simplify right side
    286,873.80x = 78,235,390,801.98
  5. Step 5: Solve for x
    x = 78,235,390,801.98/286,873.80
  6. Step 6: Final answer
    x = 272,717.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.