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Finding the Fourth Proportional to 436,779.84, 655,182.72 and 121,260

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Solution

The fourth proportional to 436,779.84, 655,182.72 and 121,260 is: 181,893.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,779.84 : 655,182.72 = 121,260 : x
  2. Step 2: Convert to fraction form
    436,779.84/655,182.72 = 121,260/x
  3. Step 3: Cross multiply
    436,779.84x = 655,182.72 × 121,260
  4. Step 4: Simplify right side
    436,779.84x = 79,447,456,627.20
  5. Step 5: Solve for x
    x = 79,447,456,627.20/436,779.84
  6. Step 6: Final answer
    x = 181,893.60

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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.