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Finding the Fourth Proportional to 286,570.80, 430,050.60 and 186,487.20

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Solution

The fourth proportional to 286,570.80, 430,050.60 and 186,487.20 is: 279,857.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,570.80 : 430,050.60 = 186,487.20 : x
  2. Step 2: Convert to fraction form
    286,570.80/430,050.60 = 186,487.20/x
  3. Step 3: Cross multiply
    286,570.80x = 430,050.60 × 186,487.20
  4. Step 4: Simplify right side
    286,570.80x = 80,198,932,252.32
  5. Step 5: Solve for x
    x = 80,198,932,252.32/286,570.80
  6. Step 6: Final answer
    x = 279,857.31

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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.