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Finding the Fourth Proportional to 395,499, 593,457.68 and 215,714.22

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Solution

The fourth proportional to 395,499, 593,457.68 and 215,714.22 is: 323,685.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,499 : 593,457.68 = 215,714.22 : x
  2. Step 2: Convert to fraction form
    395,499/593,457.68 = 215,714.22/x
  3. Step 3: Cross multiply
    395,499x = 593,457.68 × 215,714.22
  4. Step 4: Simplify right side
    395,499x = 128,017,259,465.64
  5. Step 5: Solve for x
    x = 128,017,259,465.64/395,499
  6. Step 6: Final answer
    x = 323,685.42

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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.