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Finding the Fourth Proportional to 386,443.58, 533,292.60 and 225,329.77

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Solution

The fourth proportional to 386,443.58, 533,292.60 and 225,329.77 is: 310,955.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,443.58 : 533,292.60 = 225,329.77 : x
  2. Step 2: Convert to fraction form
    386,443.58/533,292.60 = 225,329.77/x
  3. Step 3: Cross multiply
    386,443.58x = 533,292.60 × 225,329.77
  4. Step 4: Simplify right side
    386,443.58x = 120,166,700,066.38
  5. Step 5: Solve for x
    x = 120,166,700,066.38/386,443.58
  6. Step 6: Final answer
    x = 310,955.35

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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.