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Finding the Fourth Proportional to 268,656.77, 402,970.57 and 81,653.69

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Solution

The fourth proportional to 268,656.77, 402,970.57 and 81,653.69 is: 122,476.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,656.77 : 402,970.57 = 81,653.69 : x
  2. Step 2: Convert to fraction form
    268,656.77/402,970.57 = 81,653.69/x
  3. Step 3: Cross multiply
    268,656.77x = 402,970.57 × 81,653.69
  4. Step 4: Simplify right side
    268,656.77x = 32,904,032,994.48
  5. Step 5: Solve for x
    x = 32,904,032,994.48/268,656.77
  6. Step 6: Final answer
    x = 122,476.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.