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Finding the Fourth Proportional to 436,818.76, 655,155.06 and 121,307.56

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Solution

The fourth proportional to 436,818.76, 655,155.06 and 121,307.56 is: 181,941.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,818.76 : 655,155.06 = 121,307.56 : x
  2. Step 2: Convert to fraction form
    436,818.76/655,155.06 = 121,307.56/x
  3. Step 3: Cross multiply
    436,818.76x = 655,155.06 × 121,307.56
  4. Step 4: Simplify right side
    436,818.76x = 79,475,261,750.25
  5. Step 5: Solve for x
    x = 79,475,261,750.25/436,818.76
  6. Step 6: Final answer
    x = 181,941.05

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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.