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Finding the Fourth Proportional to 287,662.95, 402,203.25 and 287,662.95

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Solution

The fourth proportional to 287,662.95, 402,203.25 and 287,662.95 is: 402,203.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,662.95 : 402,203.25 = 287,662.95 : x
  2. Step 2: Convert to fraction form
    287,662.95/402,203.25 = 287,662.95/x
  3. Step 3: Cross multiply
    287,662.95x = 402,203.25 × 287,662.95
  4. Step 4: Simplify right side
    287,662.95x = 115,698,973,394.59
  5. Step 5: Solve for x
    x = 115,698,973,394.59/287,662.95
  6. Step 6: Final answer
    x = 402,203.25

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.