Home / 400,818.12-553,137.95-228,732.65

Finding the Fourth Proportional to 400,818.12, 553,137.95 and 228,732.65

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Solution

The fourth proportional to 400,818.12, 553,137.95 and 228,732.65 is: 315,656.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,818.12 : 553,137.95 = 228,732.65 : x
  2. Step 2: Convert to fraction form
    400,818.12/553,137.95 = 228,732.65/x
  3. Step 3: Cross multiply
    400,818.12x = 553,137.95 × 228,732.65
  4. Step 4: Simplify right side
    400,818.12x = 126,520,710,824.26
  5. Step 5: Solve for x
    x = 126,520,710,824.26/400,818.12
  6. Step 6: Final answer
    x = 315,656.17

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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.