Home / 370,328.18-511,084.35-209,212.80

Finding the Fourth Proportional to 370,328.18, 511,084.35 and 209,212.80

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Solution

The fourth proportional to 370,328.18, 511,084.35 and 209,212.80 is: 288,731.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,328.18 : 511,084.35 = 209,212.80 : x
  2. Step 2: Convert to fraction form
    370,328.18/511,084.35 = 209,212.80/x
  3. Step 3: Cross multiply
    370,328.18x = 511,084.35 × 209,212.80
  4. Step 4: Simplify right side
    370,328.18x = 106,925,387,899.68
  5. Step 5: Solve for x
    x = 106,925,387,899.68/370,328.18
  6. Step 6: Final answer
    x = 288,731.44

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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.