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Finding the Fourth Proportional to 290,061, 435,091.50 and 103,079.88

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Solution

The fourth proportional to 290,061, 435,091.50 and 103,079.88 is: 154,619.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,061 : 435,091.50 = 103,079.88 : x
  2. Step 2: Convert to fraction form
    290,061/435,091.50 = 103,079.88/x
  3. Step 3: Cross multiply
    290,061x = 435,091.50 × 103,079.88
  4. Step 4: Simplify right side
    290,061x = 44,849,179,609.02
  5. Step 5: Solve for x
    x = 44,849,179,609.02/290,061
  6. Step 6: Final answer
    x = 154,619.82

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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.