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Finding the Fourth Proportional to 286,048.20, 399,942.60 and 286,048.20

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Solution

The fourth proportional to 286,048.20, 399,942.60 and 286,048.20 is: 399,942.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,048.20 : 399,942.60 = 286,048.20 : x
  2. Step 2: Convert to fraction form
    286,048.20/399,942.60 = 286,048.20/x
  3. Step 3: Cross multiply
    286,048.20x = 399,942.60 × 286,048.20
  4. Step 4: Simplify right side
    286,048.20x = 114,402,860,833.32
  5. Step 5: Solve for x
    x = 114,402,860,833.32/286,048.20
  6. Step 6: Final answer
    x = 399,942.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.