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Finding the Fourth Proportional to 286,493.42, 395,371.92 and 157,437.34

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Solution

The fourth proportional to 286,493.42, 395,371.92 and 157,437.34 is: 217,269.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,493.42 : 395,371.92 = 157,437.34 : x
  2. Step 2: Convert to fraction form
    286,493.42/395,371.92 = 157,437.34/x
  3. Step 3: Cross multiply
    286,493.42x = 395,371.92 × 157,437.34
  4. Step 4: Simplify right side
    286,493.42x = 62,246,303,395.49
  5. Step 5: Solve for x
    x = 62,246,303,395.49/286,493.42
  6. Step 6: Final answer
    x = 217,269.57

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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.