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Finding the Fourth Proportional to 248,335, 342,702.30 and 135,158.56

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Solution

The fourth proportional to 248,335, 342,702.30 and 135,158.56 is: 186,518.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,335 : 342,702.30 = 135,158.56 : x
  2. Step 2: Convert to fraction form
    248,335/342,702.30 = 135,158.56/x
  3. Step 3: Cross multiply
    248,335x = 342,702.30 × 135,158.56
  4. Step 4: Simplify right side
    248,335x = 46,319,149,376.69
  5. Step 5: Solve for x
    x = 46,319,149,376.69/248,335
  6. Step 6: Final answer
    x = 186,518.81

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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.