Home / 326,818.20-490,401.45-127,145.10

Finding the Fourth Proportional to 326,818.20, 490,401.45 and 127,145.10

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Solution

The fourth proportional to 326,818.20, 490,401.45 and 127,145.10 is: 190,785.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,818.20 : 490,401.45 = 127,145.10 : x
  2. Step 2: Convert to fraction form
    326,818.20/490,401.45 = 127,145.10/x
  3. Step 3: Cross multiply
    326,818.20x = 490,401.45 × 127,145.10
  4. Step 4: Simplify right side
    326,818.20x = 62,352,141,400.40
  5. Step 5: Solve for x
    x = 62,352,141,400.40/326,818.20
  6. Step 6: Final answer
    x = 190,785.40

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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.