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Finding the Fourth Proportional to 436,698.59, 655,048.15 and 121,155.80

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Solution

The fourth proportional to 436,698.59, 655,048.15 and 121,155.80 is: 181,733.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,698.59 : 655,048.15 = 121,155.80 : x
  2. Step 2: Convert to fraction form
    436,698.59/655,048.15 = 121,155.80/x
  3. Step 3: Cross multiply
    436,698.59x = 655,048.15 × 121,155.80
  4. Step 4: Simplify right side
    436,698.59x = 79,362,879,073.64
  5. Step 5: Solve for x
    x = 79,362,879,073.64/436,698.59
  6. Step 6: Final answer
    x = 181,733.77

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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.