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Finding the Fourth Proportional to 318,291.77, 477,443.60 and 254,817.07

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Solution

The fourth proportional to 318,291.77, 477,443.60 and 254,817.07 is: 382,230.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,291.77 : 477,443.60 = 254,817.07 : x
  2. Step 2: Convert to fraction form
    318,291.77/477,443.60 = 254,817.07/x
  3. Step 3: Cross multiply
    318,291.77x = 477,443.60 × 254,817.07
  4. Step 4: Simplify right side
    318,291.77x = 121,660,779,242.25
  5. Step 5: Solve for x
    x = 121,660,779,242.25/318,291.77
  6. Step 6: Final answer
    x = 382,230.36

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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.