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Finding the Fourth Proportional to 539,918.61, 810,028.10 and 236,258.67

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Solution

The fourth proportional to 539,918.61, 810,028.10 and 236,258.67 is: 354,453.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,918.61 : 810,028.10 = 236,258.67 : x
  2. Step 2: Convert to fraction form
    539,918.61/810,028.10 = 236,258.67/x
  3. Step 3: Cross multiply
    539,918.61x = 810,028.10 × 236,258.67
  4. Step 4: Simplify right side
    539,918.61x = 191,376,160,387.33
  5. Step 5: Solve for x
    x = 191,376,160,387.33/539,918.61
  6. Step 6: Final answer
    x = 354,453.72

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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.