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Finding the Fourth Proportional to 328,610.76, 492,916.18 and 79,292.76

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Solution

The fourth proportional to 328,610.76, 492,916.18 and 79,292.76 is: 118,939.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,610.76 : 492,916.18 = 79,292.76 : x
  2. Step 2: Convert to fraction form
    328,610.76/492,916.18 = 79,292.76/x
  3. Step 3: Cross multiply
    328,610.76x = 492,916.18 × 79,292.76
  4. Step 4: Simplify right side
    328,610.76x = 39,084,684,360.86
  5. Step 5: Solve for x
    x = 39,084,684,360.86/328,610.76
  6. Step 6: Final answer
    x = 118,939.15

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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.