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Finding the Fourth Proportional to 328,419.16, 492,625.79 and 103,779.63

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Solution

The fourth proportional to 328,419.16, 492,625.79 and 103,779.63 is: 155,668.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,419.16 : 492,625.79 = 103,779.63 : x
  2. Step 2: Convert to fraction form
    328,419.16/492,625.79 = 103,779.63/x
  3. Step 3: Cross multiply
    328,419.16x = 492,625.79 × 103,779.63
  4. Step 4: Simplify right side
    328,419.16x = 51,124,522,214.66
  5. Step 5: Solve for x
    x = 51,124,522,214.66/328,419.16
  6. Step 6: Final answer
    x = 155,668.52

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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.