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Finding the Fourth Proportional to 358,859.20, 539,455.20 and 254,401.60

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Solution

The fourth proportional to 358,859.20, 539,455.20 and 254,401.60 is: 382,429.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,859.20 : 539,455.20 = 254,401.60 : x
  2. Step 2: Convert to fraction form
    358,859.20/539,455.20 = 254,401.60/x
  3. Step 3: Cross multiply
    358,859.20x = 539,455.20 × 254,401.60
  4. Step 4: Simplify right side
    358,859.20x = 137,238,266,008.32
  5. Step 5: Solve for x
    x = 137,238,266,008.32/358,859.20
  6. Step 6: Final answer
    x = 382,429.28

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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.