Home / 309,739.48-426,988.04-218,935.24

Finding the Fourth Proportional to 309,739.48, 426,988.04 and 218,935.24

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Solution

The fourth proportional to 309,739.48, 426,988.04 and 218,935.24 is: 301,810.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,739.48 : 426,988.04 = 218,935.24 : x
  2. Step 2: Convert to fraction form
    309,739.48/426,988.04 = 218,935.24/x
  3. Step 3: Cross multiply
    309,739.48x = 426,988.04 × 218,935.24
  4. Step 4: Simplify right side
    309,739.48x = 93,482,729,014.53
  5. Step 5: Solve for x
    x = 93,482,729,014.53/309,739.48
  6. Step 6: Final answer
    x = 301,810.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.