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Finding the Fourth Proportional to 290,475.60, 435,713.40 and 220,491.60

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Solution

The fourth proportional to 290,475.60, 435,713.40 and 220,491.60 is: 330,737.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,475.60 : 435,713.40 = 220,491.60 : x
  2. Step 2: Convert to fraction form
    290,475.60/435,713.40 = 220,491.60/x
  3. Step 3: Cross multiply
    290,475.60x = 435,713.40 × 220,491.60
  4. Step 4: Simplify right side
    290,475.60x = 96,071,144,707.44
  5. Step 5: Solve for x
    x = 96,071,144,707.44/290,475.60
  6. Step 6: Final answer
    x = 330,737.40

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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.