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Finding the Fourth Proportional to 265,117.65, 397,905.63 and 138,846.23

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Solution

The fourth proportional to 265,117.65, 397,905.63 and 138,846.23 is: 208,389.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,117.65 : 397,905.63 = 138,846.23 : x
  2. Step 2: Convert to fraction form
    265,117.65/397,905.63 = 138,846.23/x
  3. Step 3: Cross multiply
    265,117.65x = 397,905.63 × 138,846.23
  4. Step 4: Simplify right side
    265,117.65x = 55,247,696,621.27
  5. Step 5: Solve for x
    x = 55,247,696,621.27/265,117.65
  6. Step 6: Final answer
    x = 208,389.36

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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.