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Finding the Fourth Proportional to 218,702.63, 301,809.63 and 118,100.63

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Solution

The fourth proportional to 218,702.63, 301,809.63 and 118,100.63 is: 162,978.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,702.63 : 301,809.63 = 118,100.63 : x
  2. Step 2: Convert to fraction form
    218,702.63/301,809.63 = 118,100.63/x
  3. Step 3: Cross multiply
    218,702.63x = 301,809.63 × 118,100.63
  4. Step 4: Simplify right side
    218,702.63x = 35,643,905,934.02
  5. Step 5: Solve for x
    x = 35,643,905,934.02/218,702.63
  6. Step 6: Final answer
    x = 162,978.87

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1.5x scale

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.