Home / 345,904.20-518,856.30-307,850.40

Finding the Fourth Proportional to 345,904.20, 518,856.30 and 307,850.40

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Solution

The fourth proportional to 345,904.20, 518,856.30 and 307,850.40 is: 461,775.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,904.20 : 518,856.30 = 307,850.40 : x
  2. Step 2: Convert to fraction form
    345,904.20/518,856.30 = 307,850.40/x
  3. Step 3: Cross multiply
    345,904.20x = 518,856.30 × 307,850.40
  4. Step 4: Simplify right side
    345,904.20x = 159,730,119,497.52
  5. Step 5: Solve for x
    x = 159,730,119,497.52/345,904.20
  6. Step 6: Final answer
    x = 461,775.60

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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.