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Finding the Fourth Proportional to 248,713.84, 343,190.47 and 139,802.76

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Solution

The fourth proportional to 248,713.84, 343,190.47 and 139,802.76 is: 192,908.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,713.84 : 343,190.47 = 139,802.76 : x
  2. Step 2: Convert to fraction form
    248,713.84/343,190.47 = 139,802.76/x
  3. Step 3: Cross multiply
    248,713.84x = 343,190.47 × 139,802.76
  4. Step 4: Simplify right side
    248,713.84x = 47,978,974,824.32
  5. Step 5: Solve for x
    x = 47,978,974,824.32/248,713.84
  6. Step 6: Final answer
    x = 192,908.34

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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.