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Finding the Fourth Proportional to 426,056.29, 638,726.58 and 185,987.54

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Solution

The fourth proportional to 426,056.29, 638,726.58 and 185,987.54 is: 278,825.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,056.29 : 638,726.58 = 185,987.54 : x
  2. Step 2: Convert to fraction form
    426,056.29/638,726.58 = 185,987.54/x
  3. Step 3: Cross multiply
    426,056.29x = 638,726.58 × 185,987.54
  4. Step 4: Simplify right side
    426,056.29x = 118,795,186,943.63
  5. Step 5: Solve for x
    x = 118,795,186,943.63/426,056.29
  6. Step 6: Final answer
    x = 278,825.10

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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.