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Finding the Fourth Proportional to 289,911.40, 434,672.70 and 132,058.60

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Solution

The fourth proportional to 289,911.40, 434,672.70 and 132,058.60 is: 197,999.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,911.40 : 434,672.70 = 132,058.60 : x
  2. Step 2: Convert to fraction form
    289,911.40/434,672.70 = 132,058.60/x
  3. Step 3: Cross multiply
    289,911.40x = 434,672.70 × 132,058.60
  4. Step 4: Simplify right side
    289,911.40x = 57,402,268,220.22
  5. Step 5: Solve for x
    x = 57,402,268,220.22/289,911.40
  6. Step 6: Final answer
    x = 197,999.35

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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.