Home / 390,301.20-585,561.96-109,820.88

Finding the Fourth Proportional to 390,301.20, 585,561.96 and 109,820.88

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Solution

The fourth proportional to 390,301.20, 585,561.96 and 109,820.88 is: 164,762.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,301.20 : 585,561.96 = 109,820.88 : x
  2. Step 2: Convert to fraction form
    390,301.20/585,561.96 = 109,820.88/x
  3. Step 3: Cross multiply
    390,301.20x = 585,561.96 × 109,820.88
  4. Step 4: Simplify right side
    390,301.20x = 64,306,929,741.72
  5. Step 5: Solve for x
    x = 64,306,929,741.72/390,301.20
  6. Step 6: Final answer
    x = 164,762.32

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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.