Home / 345,911.40-518,867.10-299,255.40

Finding the Fourth Proportional to 345,911.40, 518,867.10 and 299,255.40

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Solution

The fourth proportional to 345,911.40, 518,867.10 and 299,255.40 is: 448,883.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,911.40 : 518,867.10 = 299,255.40 : x
  2. Step 2: Convert to fraction form
    345,911.40/518,867.10 = 299,255.40/x
  3. Step 3: Cross multiply
    345,911.40x = 518,867.10 × 299,255.40
  4. Step 4: Simplify right side
    345,911.40x = 155,273,781,557.34
  5. Step 5: Solve for x
    x = 155,273,781,557.34/345,911.40
  6. Step 6: Final answer
    x = 448,883.10

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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.