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Finding the Fourth Proportional to 290,935.01, 436,403.01 and 91,271.12

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Solution

The fourth proportional to 290,935.01, 436,403.01 and 91,271.12 is: 136,906.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,935.01 : 436,403.01 = 91,271.12 : x
  2. Step 2: Convert to fraction form
    290,935.01/436,403.01 = 91,271.12/x
  3. Step 3: Cross multiply
    290,935.01x = 436,403.01 × 91,271.12
  4. Step 4: Simplify right side
    290,935.01x = 39,830,989,312.06
  5. Step 5: Solve for x
    x = 39,830,989,312.06/290,935.01
  6. Step 6: Final answer
    x = 136,906.83

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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.