Home / 308,735.70-426,075.03-172,785.30

Finding the Fourth Proportional to 308,735.70, 426,075.03 and 172,785.30

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Solution

The fourth proportional to 308,735.70, 426,075.03 and 172,785.30 is: 238,454.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,735.70 : 426,075.03 = 172,785.30 : x
  2. Step 2: Convert to fraction form
    308,735.70/426,075.03 = 172,785.30/x
  3. Step 3: Cross multiply
    308,735.70x = 426,075.03 × 172,785.30
  4. Step 4: Simplify right side
    308,735.70x = 73,619,501,881.06
  5. Step 5: Solve for x
    x = 73,619,501,881.06/308,735.70
  6. Step 6: Final answer
    x = 238,454.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.