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Finding the Fourth Proportional to 290,943.60, 436,415.40 and 245,324.40

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Solution

The fourth proportional to 290,943.60, 436,415.40 and 245,324.40 is: 367,986.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,943.60 : 436,415.40 = 245,324.40 : x
  2. Step 2: Convert to fraction form
    290,943.60/436,415.40 = 245,324.40/x
  3. Step 3: Cross multiply
    290,943.60x = 436,415.40 × 245,324.40
  4. Step 4: Simplify right side
    290,943.60x = 107,063,346,155.76
  5. Step 5: Solve for x
    x = 107,063,346,155.76/290,943.60
  6. Step 6: Final answer
    x = 367,986.60

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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.