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Finding the Fourth Proportional to 285,618.06, 428,328.45 and 117,090.54

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Solution

The fourth proportional to 285,618.06, 428,328.45 and 117,090.54 is: 175,595.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,618.06 : 428,328.45 = 117,090.54 : x
  2. Step 2: Convert to fraction form
    285,618.06/428,328.45 = 117,090.54/x
  3. Step 3: Cross multiply
    285,618.06x = 428,328.45 × 117,090.54
  4. Step 4: Simplify right side
    285,618.06x = 50,153,209,507.86
  5. Step 5: Solve for x
    x = 50,153,209,507.86/285,618.06
  6. Step 6: Final answer
    x = 175,595.37

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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.