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Finding the Fourth Proportional to 307,393.58, 424,205.61 and 171,436.30

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Solution

The fourth proportional to 307,393.58, 424,205.61 and 171,436.30 is: 236,583.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,393.58 : 424,205.61 = 171,436.30 : x
  2. Step 2: Convert to fraction form
    307,393.58/424,205.61 = 171,436.30/x
  3. Step 3: Cross multiply
    307,393.58x = 424,205.61 × 171,436.30
  4. Step 4: Simplify right side
    307,393.58x = 72,724,238,514.24
  5. Step 5: Solve for x
    x = 72,724,238,514.24/307,393.58
  6. Step 6: Final answer
    x = 236,583.46

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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.