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Finding the Fourth Proportional to 218,779.75, 328,224.98 and 61,008.22

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Solution

The fourth proportional to 218,779.75, 328,224.98 and 61,008.22 is: 91,527.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,779.75 : 328,224.98 = 61,008.22 : x
  2. Step 2: Convert to fraction form
    218,779.75/328,224.98 = 61,008.22/x
  3. Step 3: Cross multiply
    218,779.75x = 328,224.98 × 61,008.22
  4. Step 4: Simplify right side
    218,779.75x = 20,024,421,484.29
  5. Step 5: Solve for x
    x = 20,024,421,484.29/218,779.75
  6. Step 6: Final answer
    x = 91,527.76

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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.