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Finding the Fourth Proportional to 374,220.40, 561,330.60 and 256,025.20

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Solution

The fourth proportional to 374,220.40, 561,330.60 and 256,025.20 is: 384,037.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,220.40 : 561,330.60 = 256,025.20 : x
  2. Step 2: Convert to fraction form
    374,220.40/561,330.60 = 256,025.20/x
  3. Step 3: Cross multiply
    374,220.40x = 561,330.60 × 256,025.20
  4. Step 4: Simplify right side
    374,220.40x = 143,714,779,131.12
  5. Step 5: Solve for x
    x = 143,714,779,131.12/374,220.40
  6. Step 6: Final answer
    x = 384,037.80

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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.