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Finding the Fourth Proportional to 325,681.20, 488,570.40 and 115,302.60

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Solution

The fourth proportional to 325,681.20, 488,570.40 and 115,302.60 is: 172,971.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,681.20 : 488,570.40 = 115,302.60 : x
  2. Step 2: Convert to fraction form
    325,681.20/488,570.40 = 115,302.60/x
  3. Step 3: Cross multiply
    325,681.20x = 488,570.40 × 115,302.60
  4. Step 4: Simplify right side
    325,681.20x = 56,333,437,403.04
  5. Step 5: Solve for x
    x = 56,333,437,403.04/325,681.20
  6. Step 6: Final answer
    x = 172,971.11

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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.