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Finding the Fourth Proportional to 350,116.40, 525,304.20 and 139,905.20

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Solution

The fourth proportional to 350,116.40, 525,304.20 and 139,905.20 is: 209,909.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,116.40 : 525,304.20 = 139,905.20 : x
  2. Step 2: Convert to fraction form
    350,116.40/525,304.20 = 139,905.20/x
  3. Step 3: Cross multiply
    350,116.40x = 525,304.20 × 139,905.20
  4. Step 4: Simplify right side
    350,116.40x = 73,492,789,161.84
  5. Step 5: Solve for x
    x = 73,492,789,161.84/350,116.40
  6. Step 6: Final answer
    x = 209,909.59

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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.