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Finding the Fourth Proportional to 328,503.60, 492,755.40 and 141,515.10

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Solution

The fourth proportional to 328,503.60, 492,755.40 and 141,515.10 is: 212,272.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,503.60 : 492,755.40 = 141,515.10 : x
  2. Step 2: Convert to fraction form
    328,503.60/492,755.40 = 141,515.10/x
  3. Step 3: Cross multiply
    328,503.60x = 492,755.40 × 141,515.10
  4. Step 4: Simplify right side
    328,503.60x = 69,732,329,706.54
  5. Step 5: Solve for x
    x = 69,732,329,706.54/328,503.60
  6. Step 6: Final answer
    x = 212,272.65

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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.