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Finding the Fourth Proportional to 290,450.20, 435,092.10 and 165,645.40

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Solution

The fourth proportional to 290,450.20, 435,092.10 and 165,645.40 is: 248,135.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,450.20 : 435,092.10 = 165,645.40 : x
  2. Step 2: Convert to fraction form
    290,450.20/435,092.10 = 165,645.40/x
  3. Step 3: Cross multiply
    290,450.20x = 435,092.10 × 165,645.40
  4. Step 4: Simplify right side
    290,450.20x = 72,071,004,941.34
  5. Step 5: Solve for x
    x = 72,071,004,941.34/290,450.20
  6. Step 6: Final answer
    x = 248,135.50

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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.