Home / 345,487.18-518,230.77-197,639.50

Finding the Fourth Proportional to 345,487.18, 518,230.77 and 197,639.50

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Solution

The fourth proportional to 345,487.18, 518,230.77 and 197,639.50 is: 296,459.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,487.18 : 518,230.77 = 197,639.50 : x
  2. Step 2: Convert to fraction form
    345,487.18/518,230.77 = 197,639.50/x
  3. Step 3: Cross multiply
    345,487.18x = 518,230.77 × 197,639.50
  4. Step 4: Simplify right side
    345,487.18x = 102,422,870,267.42
  5. Step 5: Solve for x
    x = 102,422,870,267.42/345,487.18
  6. Step 6: Final answer
    x = 296,459.25

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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.