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Finding the Fourth Proportional to 290,214.40, 435,125.76 and 100,625.92

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Solution

The fourth proportional to 290,214.40, 435,125.76 and 100,625.92 is: 150,870.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,214.40 : 435,125.76 = 100,625.92 : x
  2. Step 2: Convert to fraction form
    290,214.40/435,125.76 = 100,625.92/x
  3. Step 3: Cross multiply
    290,214.40x = 435,125.76 × 100,625.92
  4. Step 4: Simplify right side
    290,214.40x = 43,784,929,915.70
  5. Step 5: Solve for x
    x = 43,784,929,915.70/290,214.40
  6. Step 6: Final answer
    x = 150,870.98

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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.