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Finding the Fourth Proportional to 290,314,133.80, 435,471,200.70 and 74,903,381.80

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Solution

The fourth proportional to 290,314,133.80, 435,471,200.70 and 74,903,381.80 is: 112,355,072.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,314,133.80 : 435,471,200.70 = 74,903,381.80 : x
  2. Step 2: Convert to fraction form
    290,314,133.80/435,471,200.70 = 74,903,381.80/x
  3. Step 3: Cross multiply
    290,314,133.80x = 435,471,200.70 × 74,903,381.80
  4. Step 4: Simplify right side
    290,314,133.80x = 32,618,265,608,936,524
  5. Step 5: Solve for x
    x = 32,618,265,608,936,524/290,314,133.80
  6. Step 6: Final answer
    x = 112,355,072.70

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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.