Home / 309,041.02-426,503.73-173,072.80

Finding the Fourth Proportional to 309,041.02, 426,503.73 and 173,072.80

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Solution

The fourth proportional to 309,041.02, 426,503.73 and 173,072.80 is: 238,855.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,041.02 : 426,503.73 = 173,072.80 : x
  2. Step 2: Convert to fraction form
    309,041.02/426,503.73 = 173,072.80/x
  3. Step 3: Cross multiply
    309,041.02x = 426,503.73 × 173,072.80
  4. Step 4: Simplify right side
    309,041.02x = 73,816,194,761.54
  5. Step 5: Solve for x
    x = 73,816,194,761.54/309,041.02
  6. Step 6: Final answer
    x = 238,855.65

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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.