Home / 370,328.94-511,085.40-209,213.55

Finding the Fourth Proportional to 370,328.94, 511,085.40 and 209,213.55

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Solution

The fourth proportional to 370,328.94, 511,085.40 and 209,213.55 is: 288,732.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,328.94 : 511,085.40 = 209,213.55 : x
  2. Step 2: Convert to fraction form
    370,328.94/511,085.40 = 209,213.55/x
  3. Step 3: Cross multiply
    370,328.94x = 511,085.40 × 209,213.55
  4. Step 4: Simplify right side
    370,328.94x = 106,925,990,887.17
  5. Step 5: Solve for x
    x = 106,925,990,887.17/370,328.94
  6. Step 6: Final answer
    x = 288,732.47

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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.