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Finding the Fourth Proportional to 218,153.95, 300,804.23 and 153,602.55

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Solution

The fourth proportional to 218,153.95, 300,804.23 and 153,602.55 is: 211,796.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,153.95 : 300,804.23 = 153,602.55 : x
  2. Step 2: Convert to fraction form
    218,153.95/300,804.23 = 153,602.55/x
  3. Step 3: Cross multiply
    218,153.95x = 300,804.23 × 153,602.55
  4. Step 4: Simplify right side
    218,153.95x = 46,204,296,739.79
  5. Step 5: Solve for x
    x = 46,204,296,739.79/218,153.95
  6. Step 6: Final answer
    x = 211,796.75

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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.