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Finding the Fourth Proportional to 292,643.66, 438,626.64 and 134,540.30

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Solution

The fourth proportional to 292,643.66, 438,626.64 and 134,540.30 is: 201,654.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,643.66 : 438,626.64 = 134,540.30 : x
  2. Step 2: Convert to fraction form
    292,643.66/438,626.64 = 134,540.30/x
  3. Step 3: Cross multiply
    292,643.66x = 438,626.64 × 134,540.30
  4. Step 4: Simplify right side
    292,643.66x = 59,012,959,733.59
  5. Step 5: Solve for x
    x = 59,012,959,733.59/292,643.66
  6. Step 6: Final answer
    x = 201,654.67

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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.