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Finding the Fourth Proportional to 319,158.16, 440,276.40 and 243,575.44

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Solution

The fourth proportional to 319,158.16, 440,276.40 and 243,575.44 is: 336,010.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,158.16 : 440,276.40 = 243,575.44 : x
  2. Step 2: Convert to fraction form
    319,158.16/440,276.40 = 243,575.44/x
  3. Step 3: Cross multiply
    319,158.16x = 440,276.40 × 243,575.44
  4. Step 4: Simplify right side
    319,158.16x = 107,240,517,851.62
  5. Step 5: Solve for x
    x = 107,240,517,851.62/319,158.16
  6. Step 6: Final answer
    x = 336,010.58

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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.