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Finding the Fourth Proportional to 403,243.40, 604,605.90 and 166,680.20

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Solution

The fourth proportional to 403,243.40, 604,605.90 and 166,680.20 is: 249,913.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,243.40 : 604,605.90 = 166,680.20 : x
  2. Step 2: Convert to fraction form
    403,243.40/604,605.90 = 166,680.20/x
  3. Step 3: Cross multiply
    403,243.40x = 604,605.90 × 166,680.20
  4. Step 4: Simplify right side
    403,243.40x = 100,775,832,333.18
  5. Step 5: Solve for x
    x = 100,775,832,333.18/403,243.40
  6. Step 6: Final answer
    x = 249,913.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.