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Finding the Fourth Proportional to 319,307.60, 440,186.56 and 251,206.34

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Solution

The fourth proportional to 319,307.60, 440,186.56 and 251,206.34 is: 346,304.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,307.60 : 440,186.56 = 251,206.34 : x
  2. Step 2: Convert to fraction form
    319,307.60/440,186.56 = 251,206.34/x
  3. Step 3: Cross multiply
    319,307.60x = 440,186.56 × 251,206.34
  4. Step 4: Simplify right side
    319,307.60x = 110,577,651,825.84
  5. Step 5: Solve for x
    x = 110,577,651,825.84/319,307.60
  6. Step 6: Final answer
    x = 346,304.48

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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.