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Finding the Fourth Proportional to 309,608.74, 427,218.73 and 171,785.46

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Solution

The fourth proportional to 309,608.74, 427,218.73 and 171,785.46 is: 237,041.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,608.74 : 427,218.73 = 171,785.46 : x
  2. Step 2: Convert to fraction form
    309,608.74/427,218.73 = 171,785.46/x
  3. Step 3: Cross multiply
    309,608.74x = 427,218.73 × 171,785.46
  4. Step 4: Simplify right side
    309,608.74x = 73,389,966,053.67
  5. Step 5: Solve for x
    x = 73,389,966,053.67/309,608.74
  6. Step 6: Final answer
    x = 237,041.00

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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.