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Finding the Fourth Proportional to 153,439.58, 211,689.31 and 153,203.03

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Solution

The fourth proportional to 153,439.58, 211,689.31 and 153,203.03 is: 211,362.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,439.58 : 211,689.31 = 153,203.03 : x
  2. Step 2: Convert to fraction form
    153,439.58/211,689.31 = 153,203.03/x
  3. Step 3: Cross multiply
    153,439.58x = 211,689.31 × 153,203.03
  4. Step 4: Simplify right side
    153,439.58x = 32,431,443,710.61
  5. Step 5: Solve for x
    x = 32,431,443,710.61/153,439.58
  6. Step 6: Final answer
    x = 211,362.96

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.