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Finding the Fourth Proportional to 355,497.40, 533,246.10 and 320,505.40

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Solution

The fourth proportional to 355,497.40, 533,246.10 and 320,505.40 is: 480,758.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,497.40 : 533,246.10 = 320,505.40 : x
  2. Step 2: Convert to fraction form
    355,497.40/533,246.10 = 320,505.40/x
  3. Step 3: Cross multiply
    355,497.40x = 533,246.10 × 320,505.40
  4. Step 4: Simplify right side
    355,497.40x = 170,908,254,578.94
  5. Step 5: Solve for x
    x = 170,908,254,578.94/355,497.40
  6. Step 6: Final answer
    x = 480,758.10

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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.