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Finding the Fourth Proportional to 290,382.13, 435,589.59 and 103,393.63

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Solution

The fourth proportional to 290,382.13, 435,589.59 and 103,393.63 is: 155,096.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,382.13 : 435,589.59 = 103,393.63 : x
  2. Step 2: Convert to fraction form
    290,382.13/435,589.59 = 103,393.63/x
  3. Step 3: Cross multiply
    290,382.13x = 435,589.59 × 103,393.63
  4. Step 4: Simplify right side
    290,382.13x = 45,037,186,722.36
  5. Step 5: Solve for x
    x = 45,037,186,722.36/290,382.13
  6. Step 6: Final answer
    x = 155,096.28

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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.