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Finding the Fourth Proportional to 255,618.60, 383,427.90 and 161,140.20

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Solution

The fourth proportional to 255,618.60, 383,427.90 and 161,140.20 is: 241,710.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,618.60 : 383,427.90 = 161,140.20 : x
  2. Step 2: Convert to fraction form
    255,618.60/383,427.90 = 161,140.20/x
  3. Step 3: Cross multiply
    255,618.60x = 383,427.90 × 161,140.20
  4. Step 4: Simplify right side
    255,618.60x = 61,785,648,491.58
  5. Step 5: Solve for x
    x = 61,785,648,491.58/255,618.60
  6. Step 6: Final answer
    x = 241,710.30

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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.