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Finding the Fourth Proportional to 290,004.93, 435,006.59 and 79,643.07

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Solution

The fourth proportional to 290,004.93, 435,006.59 and 79,643.07 is: 119,464.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,004.93 : 435,006.59 = 79,643.07 : x
  2. Step 2: Convert to fraction form
    290,004.93/435,006.59 = 79,643.07/x
  3. Step 3: Cross multiply
    290,004.93x = 435,006.59 × 79,643.07
  4. Step 4: Simplify right side
    290,004.93x = 34,645,259,899.62
  5. Step 5: Solve for x
    x = 34,645,259,899.62/290,004.93
  6. Step 6: Final answer
    x = 119,464.38

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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.