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Finding the Fourth Proportional to 316,931.97, 475,226.24 and 139,230.93

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Solution

The fourth proportional to 316,931.97, 475,226.24 and 139,230.93 is: 208,770.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,931.97 : 475,226.24 = 139,230.93 : x
  2. Step 2: Convert to fraction form
    316,931.97/475,226.24 = 139,230.93/x
  3. Step 3: Cross multiply
    316,931.97x = 475,226.24 × 139,230.93
  4. Step 4: Simplify right side
    316,931.97x = 66,166,190,659.45
  5. Step 5: Solve for x
    x = 66,166,190,659.45/316,931.97
  6. Step 6: Final answer
    x = 208,770.96

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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.