Home / 345,357.85-518,011.50-108,768.19

Finding the Fourth Proportional to 345,357.85, 518,011.50 and 108,768.19

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Solution

The fourth proportional to 345,357.85, 518,011.50 and 108,768.19 is: 163,144.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,357.85 : 518,011.50 = 108,768.19 : x
  2. Step 2: Convert to fraction form
    345,357.85/518,011.50 = 108,768.19/x
  3. Step 3: Cross multiply
    345,357.85x = 518,011.50 × 108,768.19
  4. Step 4: Simplify right side
    345,357.85x = 56,343,173,254.19
  5. Step 5: Solve for x
    x = 56,343,173,254.19/345,357.85
  6. Step 6: Final answer
    x = 163,144.32

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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.