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Finding the Fourth Proportional to 439,473.51, 658,992.15 and 139,915.08

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Solution

The fourth proportional to 439,473.51, 658,992.15 and 139,915.08 is: 209,803.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,473.51 : 658,992.15 = 139,915.08 : x
  2. Step 2: Convert to fraction form
    439,473.51/658,992.15 = 139,915.08/x
  3. Step 3: Cross multiply
    439,473.51x = 658,992.15 × 139,915.08
  4. Step 4: Simplify right side
    439,473.51x = 92,202,939,386.62
  5. Step 5: Solve for x
    x = 92,202,939,386.62/439,473.51
  6. Step 6: Final answer
    x = 209,803.18

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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.