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Finding the Fourth Proportional to 290,094.36, 435,132.42 and 79,730.48

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Solution

The fourth proportional to 290,094.36, 435,132.42 and 79,730.48 is: 119,593.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,094.36 : 435,132.42 = 79,730.48 : x
  2. Step 2: Convert to fraction form
    290,094.36/435,132.42 = 79,730.48/x
  3. Step 3: Cross multiply
    290,094.36x = 435,132.42 × 79,730.48
  4. Step 4: Simplify right side
    290,094.36x = 34,693,316,710.16
  5. Step 5: Solve for x
    x = 34,693,316,710.16/290,094.36
  6. Step 6: Final answer
    x = 119,593.21

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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.