Home / 213,192,040.80-319,788,061.20-209,790,818.40

Finding the Fourth Proportional to 213,192,040.80, 319,788,061.20 and 209,790,818.40

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Solution

The fourth proportional to 213,192,040.80, 319,788,061.20 and 209,790,818.40 is: 314,686,227.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,192,040.80 : 319,788,061.20 = 209,790,818.40 : x
  2. Step 2: Convert to fraction form
    213,192,040.80/319,788,061.20 = 209,790,818.40/x
  3. Step 3: Cross multiply
    213,192,040.80x = 319,788,061.20 × 209,790,818.40
  4. Step 4: Simplify right side
    213,192,040.80x = 67,088,599,073,697,288
  5. Step 5: Solve for x
    x = 67,088,599,073,697,288/213,192,040.80
  6. Step 6: Final answer
    x = 314,686,227.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.