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Finding the Fourth Proportional to 98,328.40, 147,493.41 and 28,209.94

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Solution

The fourth proportional to 98,328.40, 147,493.41 and 28,209.94 is: 42,315.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,328.40 : 147,493.41 = 28,209.94 : x
  2. Step 2: Convert to fraction form
    98,328.40/147,493.41 = 28,209.94/x
  3. Step 3: Cross multiply
    98,328.40x = 147,493.41 × 28,209.94
  4. Step 4: Simplify right side
    98,328.40x = 4,160,780,246.50
  5. Step 5: Solve for x
    x = 4,160,780,246.50/98,328.40
  6. Step 6: Final answer
    x = 42,315.14

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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.