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Finding the Fourth Proportional to 290,641.67, 436,045.88 and 122,075.30

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Solution

The fourth proportional to 290,641.67, 436,045.88 and 122,075.30 is: 183,147.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,641.67 : 436,045.88 = 122,075.30 : x
  2. Step 2: Convert to fraction form
    290,641.67/436,045.88 = 122,075.30/x
  3. Step 3: Cross multiply
    290,641.67x = 436,045.88 × 122,075.30
  4. Step 4: Simplify right side
    290,641.67x = 53,230,433,010.07
  5. Step 5: Solve for x
    x = 53,230,433,010.07/290,641.67
  6. Step 6: Final answer
    x = 183,147.97

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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.