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Finding the Fourth Proportional to 248,607.92, 343,078.96 and 135,430.72

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Solution

The fourth proportional to 248,607.92, 343,078.96 and 135,430.72 is: 186,894.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,607.92 : 343,078.96 = 135,430.72 : x
  2. Step 2: Convert to fraction form
    248,607.92/343,078.96 = 135,430.72/x
  3. Step 3: Cross multiply
    248,607.92x = 343,078.96 × 135,430.72
  4. Step 4: Simplify right side
    248,607.92x = 46,463,430,569.65
  5. Step 5: Solve for x
    x = 46,463,430,569.65/248,607.92
  6. Step 6: Final answer
    x = 186,894.41

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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.