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Finding the Fourth Proportional to 247,014.36, 340,880.40 and 139,574.34

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Solution

The fourth proportional to 247,014.36, 340,880.40 and 139,574.34 is: 192,612.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,014.36 : 340,880.40 = 139,574.34 : x
  2. Step 2: Convert to fraction form
    247,014.36/340,880.40 = 139,574.34/x
  3. Step 3: Cross multiply
    247,014.36x = 340,880.40 × 139,574.34
  4. Step 4: Simplify right side
    247,014.36x = 47,578,156,848.94
  5. Step 5: Solve for x
    x = 47,578,156,848.94/247,014.36
  6. Step 6: Final answer
    x = 192,612.92

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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.