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Finding the Fourth Proportional to 310,726.19, 428,737.86 and 181,639.73

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Solution

The fourth proportional to 310,726.19, 428,737.86 and 181,639.73 is: 250,625.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,726.19 : 428,737.86 = 181,639.73 : x
  2. Step 2: Convert to fraction form
    310,726.19/428,737.86 = 181,639.73/x
  3. Step 3: Cross multiply
    310,726.19x = 428,737.86 × 181,639.73
  4. Step 4: Simplify right side
    310,726.19x = 77,875,830,203.02
  5. Step 5: Solve for x
    x = 77,875,830,203.02/310,726.19
  6. Step 6: Final answer
    x = 250,625.25

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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.