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Finding the Fourth Proportional to 218,779.50, 328,224.60 and 61,007.97

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Solution

The fourth proportional to 218,779.50, 328,224.60 and 61,007.97 is: 91,527.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,779.50 : 328,224.60 = 61,007.97 : x
  2. Step 2: Convert to fraction form
    218,779.50/328,224.60 = 61,007.97/x
  3. Step 3: Cross multiply
    218,779.50x = 328,224.60 × 61,007.97
  4. Step 4: Simplify right side
    218,779.50x = 20,024,316,550.06
  5. Step 5: Solve for x
    x = 20,024,316,550.06/218,779.50
  6. Step 6: Final answer
    x = 91,527.39

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1.5x scale

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.