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Finding the Fourth Proportional to 208,364.88, 287,485.18 and 130,848.88

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Solution

The fourth proportional to 208,364.88, 287,485.18 and 130,848.88 is: 180,534.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,364.88 : 287,485.18 = 130,848.88 : x
  2. Step 2: Convert to fraction form
    208,364.88/287,485.18 = 130,848.88/x
  3. Step 3: Cross multiply
    208,364.88x = 287,485.18 × 130,848.88
  4. Step 4: Simplify right side
    208,364.88x = 37,617,113,819.60
  5. Step 5: Solve for x
    x = 37,617,113,819.60/208,364.88
  6. Step 6: Final answer
    x = 180,534.81

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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.