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Finding the Fourth Proportional to 356,646.21, 492,222.12 and 220,723.95

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Solution

The fourth proportional to 356,646.21, 492,222.12 and 220,723.95 is: 304,630.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,646.21 : 492,222.12 = 220,723.95 : x
  2. Step 2: Convert to fraction form
    356,646.21/492,222.12 = 220,723.95/x
  3. Step 3: Cross multiply
    356,646.21x = 492,222.12 × 220,723.95
  4. Step 4: Simplify right side
    356,646.21x = 108,645,210,603.77
  5. Step 5: Solve for x
    x = 108,645,210,603.77/356,646.21
  6. Step 6: Final answer
    x = 304,630.21

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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.