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Finding the Fourth Proportional to 370,109.04, 510,487 and 255,431.44

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Solution

The fourth proportional to 370,109.04, 510,487 and 255,431.44 is: 352,313.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,109.04 : 510,487 = 255,431.44 : x
  2. Step 2: Convert to fraction form
    370,109.04/510,487 = 255,431.44/x
  3. Step 3: Cross multiply
    370,109.04x = 510,487 × 255,431.44
  4. Step 4: Simplify right side
    370,109.04x = 130,394,429,511.28
  5. Step 5: Solve for x
    x = 130,394,429,511.28/370,109.04
  6. Step 6: Final answer
    x = 352,313.55

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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.