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Finding the Fourth Proportional to 368,116.60, 552,693.30 and 289,319.80

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Solution

The fourth proportional to 368,116.60, 552,693.30 and 289,319.80 is: 434,387.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,116.60 : 552,693.30 = 289,319.80 : x
  2. Step 2: Convert to fraction form
    368,116.60/552,693.30 = 289,319.80/x
  3. Step 3: Cross multiply
    368,116.60x = 552,693.30 × 289,319.80
  4. Step 4: Simplify right side
    368,116.60x = 159,905,115,017.34
  5. Step 5: Solve for x
    x = 159,905,115,017.34/368,116.60
  6. Step 6: Final answer
    x = 434,387.13

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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.