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Finding the Fourth Proportional to 401,732, 554,392.32 and 220,461.20

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Solution

The fourth proportional to 401,732, 554,392.32 and 220,461.20 is: 304,237.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,732 : 554,392.32 = 220,461.20 : x
  2. Step 2: Convert to fraction form
    401,732/554,392.32 = 220,461.20/x
  3. Step 3: Cross multiply
    401,732x = 554,392.32 × 220,461.20
  4. Step 4: Simplify right side
    401,732x = 122,221,996,137.98
  5. Step 5: Solve for x
    x = 122,221,996,137.98/401,732
  6. Step 6: Final answer
    x = 304,237.64

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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.