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Finding the Fourth Proportional to 319,017.69, 440,275.44 and 238,305.09

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Solution

The fourth proportional to 319,017.69, 440,275.44 and 238,305.09 is: 328,884.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,017.69 : 440,275.44 = 238,305.09 : x
  2. Step 2: Convert to fraction form
    319,017.69/440,275.44 = 238,305.09/x
  3. Step 3: Cross multiply
    319,017.69x = 440,275.44 × 238,305.09
  4. Step 4: Simplify right side
    319,017.69x = 104,919,880,005.02
  5. Step 5: Solve for x
    x = 104,919,880,005.02/319,017.69
  6. Step 6: Final answer
    x = 328,884.20

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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.