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Finding the Fourth Proportional to 316,458.46, 436,708.87 and 171,260.86

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Solution

The fourth proportional to 316,458.46, 436,708.87 and 171,260.86 is: 236,337.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,458.46 : 436,708.87 = 171,260.86 : x
  2. Step 2: Convert to fraction form
    316,458.46/436,708.87 = 171,260.86/x
  3. Step 3: Cross multiply
    316,458.46x = 436,708.87 × 171,260.86
  4. Step 4: Simplify right side
    316,458.46x = 74,791,136,645.83
  5. Step 5: Solve for x
    x = 74,791,136,645.83/316,458.46
  6. Step 6: Final answer
    x = 236,337.93

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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.