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Finding the Fourth Proportional to 308,677.86, 426,058.65 and 181,438.74

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Solution

The fourth proportional to 308,677.86, 426,058.65 and 181,438.74 is: 250,434.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,677.86 : 426,058.65 = 181,438.74 : x
  2. Step 2: Convert to fraction form
    308,677.86/426,058.65 = 181,438.74/x
  3. Step 3: Cross multiply
    308,677.86x = 426,058.65 × 181,438.74
  4. Step 4: Simplify right side
    308,677.86x = 77,303,544,622.10
  5. Step 5: Solve for x
    x = 77,303,544,622.10/308,677.86
  6. Step 6: Final answer
    x = 250,434.37

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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.