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Finding the Fourth Proportional to 290,530.40, 435,950.40 and 113,043.20

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Solution

The fourth proportional to 290,530.40, 435,950.40 and 113,043.20 is: 169,625.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,530.40 : 435,950.40 = 113,043.20 : x
  2. Step 2: Convert to fraction form
    290,530.40/435,950.40 = 113,043.20/x
  3. Step 3: Cross multiply
    290,530.40x = 435,950.40 × 113,043.20
  4. Step 4: Simplify right side
    290,530.40x = 49,281,228,257.28
  5. Step 5: Solve for x
    x = 49,281,228,257.28/290,530.40
  6. Step 6: Final answer
    x = 169,625.03

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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.