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Finding the Fourth Proportional to 316,831.12, 437,226.88 and 189,536.64

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Solution

The fourth proportional to 316,831.12, 437,226.88 and 189,536.64 is: 261,560.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,831.12 : 437,226.88 = 189,536.64 : x
  2. Step 2: Convert to fraction form
    316,831.12/437,226.88 = 189,536.64/x
  3. Step 3: Cross multiply
    316,831.12x = 437,226.88 × 189,536.64
  4. Step 4: Simplify right side
    316,831.12x = 82,870,513,752.88
  5. Step 5: Solve for x
    x = 82,870,513,752.88/316,831.12
  6. Step 6: Final answer
    x = 261,560.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.