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Finding the Fourth Proportional to 153,438.58, 211,687.93 and 153,202.03

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Solution

The fourth proportional to 153,438.58, 211,687.93 and 153,202.03 is: 211,361.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,438.58 : 211,687.93 = 153,202.03 : x
  2. Step 2: Convert to fraction form
    153,438.58/211,687.93 = 153,202.03/x
  3. Step 3: Cross multiply
    153,438.58x = 211,687.93 × 153,202.03
  4. Step 4: Simplify right side
    153,438.58x = 32,431,020,602.50
  5. Step 5: Solve for x
    x = 32,431,020,602.50/153,438.58
  6. Step 6: Final answer
    x = 211,361.58

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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.