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Finding the Fourth Proportional to 474,666.12, 655,037.64 and 256,874.40

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Solution

The fourth proportional to 474,666.12, 655,037.64 and 256,874.40 is: 354,485.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,666.12 : 655,037.64 = 256,874.40 : x
  2. Step 2: Convert to fraction form
    474,666.12/655,037.64 = 256,874.40/x
  3. Step 3: Cross multiply
    474,666.12x = 655,037.64 × 256,874.40
  4. Step 4: Simplify right side
    474,666.12x = 168,262,400,752.42
  5. Step 5: Solve for x
    x = 168,262,400,752.42/474,666.12
  6. Step 6: Final answer
    x = 354,485.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.