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Finding the Fourth Proportional to 642,843.54, 964,445.88 and 238,029.66

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Solution

The fourth proportional to 642,843.54, 964,445.88 and 238,029.66 is: 357,111.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,843.54 : 964,445.88 = 238,029.66 : x
  2. Step 2: Convert to fraction form
    642,843.54/964,445.88 = 238,029.66/x
  3. Step 3: Cross multiply
    642,843.54x = 964,445.88 × 238,029.66
  4. Step 4: Simplify right side
    642,843.54x = 229,566,724,904.80
  5. Step 5: Solve for x
    x = 229,566,724,904.80/642,843.54
  6. Step 6: Final answer
    x = 357,111.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.