Home / 642,488.20-963,732.30-193,278.40

Finding the Fourth Proportional to 642,488.20, 963,732.30 and 193,278.40

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Solution

The fourth proportional to 642,488.20, 963,732.30 and 193,278.40 is: 289,917.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,488.20 : 963,732.30 = 193,278.40 : x
  2. Step 2: Convert to fraction form
    642,488.20/963,732.30 = 193,278.40/x
  3. Step 3: Cross multiply
    642,488.20x = 963,732.30 × 193,278.40
  4. Step 4: Simplify right side
    642,488.20x = 186,268,636,972.32
  5. Step 5: Solve for x
    x = 186,268,636,972.32/642,488.20
  6. Step 6: Final answer
    x = 289,917.60

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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.