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Finding the Fourth Proportional to 309,273.81, 426,790.62 and 181,957.59

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Solution

The fourth proportional to 309,273.81, 426,790.62 and 181,957.59 is: 251,097.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,273.81 : 426,790.62 = 181,957.59 : x
  2. Step 2: Convert to fraction form
    309,273.81/426,790.62 = 181,957.59/x
  3. Step 3: Cross multiply
    309,273.81x = 426,790.62 × 181,957.59
  4. Step 4: Simplify right side
    309,273.81x = 77,657,791,740.02
  5. Step 5: Solve for x
    x = 77,657,791,740.02/309,273.81
  6. Step 6: Final answer
    x = 251,097.21

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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.