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Finding the Fourth Proportional to 290,448.70, 435,361.57 and 140,482.69

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Solution

The fourth proportional to 290,448.70, 435,361.57 and 140,482.69 is: 210,573.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,448.70 : 435,361.57 = 140,482.69 : x
  2. Step 2: Convert to fraction form
    290,448.70/435,361.57 = 140,482.69/x
  3. Step 3: Cross multiply
    290,448.70x = 435,361.57 × 140,482.69
  4. Step 4: Simplify right side
    290,448.70x = 61,160,764,476.22
  5. Step 5: Solve for x
    x = 61,160,764,476.22/290,448.70
  6. Step 6: Final answer
    x = 210,573.38

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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.