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Finding the Fourth Proportional to 355,660.60, 533,490.90 and 256,516.60

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Solution

The fourth proportional to 355,660.60, 533,490.90 and 256,516.60 is: 384,774.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,660.60 : 533,490.90 = 256,516.60 : x
  2. Step 2: Convert to fraction form
    355,660.60/533,490.90 = 256,516.60/x
  3. Step 3: Cross multiply
    355,660.60x = 533,490.90 × 256,516.60
  4. Step 4: Simplify right side
    355,660.60x = 136,849,271,798.94
  5. Step 5: Solve for x
    x = 136,849,271,798.94/355,660.60
  6. Step 6: Final answer
    x = 384,774.90

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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.