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Finding the Fourth Proportional to 290,350.80, 435,007.80 and 245,768.40

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Solution

The fourth proportional to 290,350.80, 435,007.80 and 245,768.40 is: 368,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,350.80 : 435,007.80 = 245,768.40 : x
  2. Step 2: Convert to fraction form
    290,350.80/435,007.80 = 245,768.40/x
  3. Step 3: Cross multiply
    290,350.80x = 435,007.80 × 245,768.40
  4. Step 4: Simplify right side
    290,350.80x = 106,911,170,993.52
  5. Step 5: Solve for x
    x = 106,911,170,993.52/290,350.80
  6. Step 6: Final answer
    x = 368,213.80

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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.