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Finding the Fourth Proportional to 230,352.21, 317,889.27 and 128,374.83

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Solution

The fourth proportional to 230,352.21, 317,889.27 and 128,374.83 is: 177,159.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,352.21 : 317,889.27 = 128,374.83 : x
  2. Step 2: Convert to fraction form
    230,352.21/317,889.27 = 128,374.83/x
  3. Step 3: Cross multiply
    230,352.21x = 317,889.27 × 128,374.83
  4. Step 4: Simplify right side
    230,352.21x = 40,808,980,995.07
  5. Step 5: Solve for x
    x = 40,808,980,995.07/230,352.21
  6. Step 6: Final answer
    x = 177,159.06

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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.