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Finding the Fourth Proportional to 510,405.45, 765,678.21 and 173,355.60

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Solution

The fourth proportional to 510,405.45, 765,678.21 and 173,355.60 is: 260,057.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,405.45 : 765,678.21 = 173,355.60 : x
  2. Step 2: Convert to fraction form
    510,405.45/765,678.21 = 173,355.60/x
  3. Step 3: Cross multiply
    510,405.45x = 765,678.21 × 173,355.60
  4. Step 4: Simplify right side
    510,405.45x = 132,734,605,501.48
  5. Step 5: Solve for x
    x = 132,734,605,501.48/510,405.45
  6. Step 6: Final answer
    x = 260,057.19

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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.