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Finding the Fourth Proportional to 238,889.79, 357,940.82 and 138,768.93

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Solution

The fourth proportional to 238,889.79, 357,940.82 and 138,768.93 is: 207,924.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,889.79 : 357,940.82 = 138,768.93 : x
  2. Step 2: Convert to fraction form
    238,889.79/357,940.82 = 138,768.93/x
  3. Step 3: Cross multiply
    238,889.79x = 357,940.82 × 138,768.93
  4. Step 4: Simplify right side
    238,889.79x = 49,671,064,941.64
  5. Step 5: Solve for x
    x = 49,671,064,941.64/238,889.79
  6. Step 6: Final answer
    x = 207,924.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.