Home / 309,330.37-426,880.95-173,394.55

Finding the Fourth Proportional to 309,330.37, 426,880.95 and 173,394.55

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Solution

The fourth proportional to 309,330.37, 426,880.95 and 173,394.55 is: 239,287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,330.37 : 426,880.95 = 173,394.55 : x
  2. Step 2: Convert to fraction form
    309,330.37/426,880.95 = 173,394.55/x
  3. Step 3: Cross multiply
    309,330.37x = 426,880.95 × 173,394.55
  4. Step 4: Simplify right side
    309,330.37x = 74,018,830,228.82
  5. Step 5: Solve for x
    x = 74,018,830,228.82/309,330.37
  6. Step 6: Final answer
    x = 239,287.30

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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.