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Finding the Fourth Proportional to 248,366.48, 342,765.96 and 139,468.40

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Solution

The fourth proportional to 248,366.48, 342,765.96 and 139,468.40 is: 192,477.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,366.48 : 342,765.96 = 139,468.40 : x
  2. Step 2: Convert to fraction form
    248,366.48/342,765.96 = 139,468.40/x
  3. Step 3: Cross multiply
    248,366.48x = 342,765.96 × 139,468.40
  4. Step 4: Simplify right side
    248,366.48x = 47,805,020,015.66
  5. Step 5: Solve for x
    x = 47,805,020,015.66/248,366.48
  6. Step 6: Final answer
    x = 192,477.75

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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.