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Finding the Fourth Proportional to 292,511.60, 438,639.40 and 134,687.60

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Solution

The fourth proportional to 292,511.60, 438,639.40 and 134,687.60 is: 201,972.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,511.60 : 438,639.40 = 134,687.60 : x
  2. Step 2: Convert to fraction form
    292,511.60/438,639.40 = 134,687.60/x
  3. Step 3: Cross multiply
    292,511.60x = 438,639.40 × 134,687.60
  4. Step 4: Simplify right side
    292,511.60x = 59,079,288,051.44
  5. Step 5: Solve for x
    x = 59,079,288,051.44/292,511.60
  6. Step 6: Final answer
    x = 201,972.46

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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.