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Finding the Fourth Proportional to 289,661.60, 434,492.40 and 102,648.80

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Solution

The fourth proportional to 289,661.60, 434,492.40 and 102,648.80 is: 153,973.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,661.60 : 434,492.40 = 102,648.80 : x
  2. Step 2: Convert to fraction form
    289,661.60/434,492.40 = 102,648.80/x
  3. Step 3: Cross multiply
    289,661.60x = 434,492.40 × 102,648.80
  4. Step 4: Simplify right side
    289,661.60x = 44,600,123,469.12
  5. Step 5: Solve for x
    x = 44,600,123,469.12/289,661.60
  6. Step 6: Final answer
    x = 153,973.20

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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.