Home / 345,205.80-518,003.10-134,816.40

Finding the Fourth Proportional to 345,205.80, 518,003.10 and 134,816.40

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Solution

The fourth proportional to 345,205.80, 518,003.10 and 134,816.40 is: 202,300.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,205.80 : 518,003.10 = 134,816.40 : x
  2. Step 2: Convert to fraction form
    345,205.80/518,003.10 = 134,816.40/x
  3. Step 3: Cross multiply
    345,205.80x = 518,003.10 × 134,816.40
  4. Step 4: Simplify right side
    345,205.80x = 69,835,313,130.84
  5. Step 5: Solve for x
    x = 69,835,313,130.84/345,205.80
  6. Step 6: Final answer
    x = 202,300.52

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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.