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Finding the Fourth Proportional to 328,266.84, 492,391.62 and 103,618.20

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Solution

The fourth proportional to 328,266.84, 492,391.62 and 103,618.20 is: 155,424.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,266.84 : 492,391.62 = 103,618.20 : x
  2. Step 2: Convert to fraction form
    328,266.84/492,391.62 = 103,618.20/x
  3. Step 3: Cross multiply
    328,266.84x = 492,391.62 × 103,618.20
  4. Step 4: Simplify right side
    328,266.84x = 51,020,733,359.48
  5. Step 5: Solve for x
    x = 51,020,733,359.48/328,266.84
  6. Step 6: Final answer
    x = 155,424.57

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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.