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Finding the Fourth Proportional to 286,273, 395,041.26 and 158,940.40

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Solution

The fourth proportional to 286,273, 395,041.26 and 158,940.40 is: 219,329.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,273 : 395,041.26 = 158,940.40 : x
  2. Step 2: Convert to fraction form
    286,273/395,041.26 = 158,940.40/x
  3. Step 3: Cross multiply
    286,273x = 395,041.26 × 158,940.40
  4. Step 4: Simplify right side
    286,273x = 62,788,015,880.90
  5. Step 5: Solve for x
    x = 62,788,015,880.90/286,273
  6. Step 6: Final answer
    x = 219,329.16

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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.