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Finding the Fourth Proportional to 308,014.14, 425,055 and 172,050.12

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Solution

The fourth proportional to 308,014.14, 425,055 and 172,050.12 is: 237,426.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,014.14 : 425,055 = 172,050.12 : x
  2. Step 2: Convert to fraction form
    308,014.14/425,055 = 172,050.12/x
  3. Step 3: Cross multiply
    308,014.14x = 425,055 × 172,050.12
  4. Step 4: Simplify right side
    308,014.14x = 73,130,763,756.60
  5. Step 5: Solve for x
    x = 73,130,763,756.60/308,014.14
  6. Step 6: Final answer
    x = 237,426.64

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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.