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Finding the Fourth Proportional to 631,874.40, 947,811.60 and 158,575.20

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Solution

The fourth proportional to 631,874.40, 947,811.60 and 158,575.20 is: 237,862.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,874.40 : 947,811.60 = 158,575.20 : x
  2. Step 2: Convert to fraction form
    631,874.40/947,811.60 = 158,575.20/x
  3. Step 3: Cross multiply
    631,874.40x = 947,811.60 × 158,575.20
  4. Step 4: Simplify right side
    631,874.40x = 150,299,414,032.32
  5. Step 5: Solve for x
    x = 150,299,414,032.32/631,874.40
  6. Step 6: Final answer
    x = 237,862.80

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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.