Home / 309,328.12-426,907.02-173,384.20

Finding the Fourth Proportional to 309,328.12, 426,907.02 and 173,384.20

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Solution

The fourth proportional to 309,328.12, 426,907.02 and 173,384.20 is: 239,289.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,328.12 : 426,907.02 = 173,384.20 : x
  2. Step 2: Convert to fraction form
    309,328.12/426,907.02 = 173,384.20/x
  3. Step 3: Cross multiply
    309,328.12x = 426,907.02 × 173,384.20
  4. Step 4: Simplify right side
    309,328.12x = 74,018,932,137.08
  5. Step 5: Solve for x
    x = 74,018,932,137.08/309,328.12
  6. Step 6: Final answer
    x = 239,289.37

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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.