Home / 642,120.40-963,295.80-268,181.20

Finding the Fourth Proportional to 642,120.40, 963,295.80 and 268,181.20

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Solution

The fourth proportional to 642,120.40, 963,295.80 and 268,181.20 is: 402,319.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,120.40 : 963,295.80 = 268,181.20 : x
  2. Step 2: Convert to fraction form
    642,120.40/963,295.80 = 268,181.20/x
  3. Step 3: Cross multiply
    642,120.40x = 963,295.80 × 268,181.20
  4. Step 4: Simplify right side
    642,120.40x = 258,337,823,598.96
  5. Step 5: Solve for x
    x = 258,337,823,598.96/642,120.40
  6. Step 6: Final answer
    x = 402,319.91

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1.5x scale

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.