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Finding the Fourth Proportional to 290,465.90, 434,532.45 and 251,456.30

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Solution

The fourth proportional to 290,465.90, 434,532.45 and 251,456.30 is: 376,174.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,465.90 : 434,532.45 = 251,456.30 : x
  2. Step 2: Convert to fraction form
    290,465.90/434,532.45 = 251,456.30/x
  3. Step 3: Cross multiply
    290,465.90x = 434,532.45 × 251,456.30
  4. Step 4: Simplify right side
    290,465.90x = 109,265,922,106.94
  5. Step 5: Solve for x
    x = 109,265,922,106.94/290,465.90
  6. Step 6: Final answer
    x = 376,174.70

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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.