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Finding the Fourth Proportional to 245,393.55, 338,810.85 and 187,931.34

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Solution

The fourth proportional to 245,393.55, 338,810.85 and 187,931.34 is: 259,473.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,393.55 : 338,810.85 = 187,931.34 : x
  2. Step 2: Convert to fraction form
    245,393.55/338,810.85 = 187,931.34/x
  3. Step 3: Cross multiply
    245,393.55x = 338,810.85 × 187,931.34
  4. Step 4: Simplify right side
    245,393.55x = 63,673,177,047.04
  5. Step 5: Solve for x
    x = 63,673,177,047.04/245,393.55
  6. Step 6: Final answer
    x = 259,473.72

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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.