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Finding the Fourth Proportional to 289,883.40, 434,630.70 and 132,030.60

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Solution

The fourth proportional to 289,883.40, 434,630.70 and 132,030.60 is: 197,957.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,883.40 : 434,630.70 = 132,030.60 : x
  2. Step 2: Convert to fraction form
    289,883.40/434,630.70 = 132,030.60/x
  3. Step 3: Cross multiply
    289,883.40x = 434,630.70 × 132,030.60
  4. Step 4: Simplify right side
    289,883.40x = 57,384,552,099.42
  5. Step 5: Solve for x
    x = 57,384,552,099.42/289,883.40
  6. Step 6: Final answer
    x = 197,957.36

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1.5x scale

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.