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Finding the Fourth Proportional to 395,312.76, 545,527.60 and 214,019.88

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Solution

The fourth proportional to 395,312.76, 545,527.60 and 214,019.88 is: 295,345.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,312.76 : 545,527.60 = 214,019.88 : x
  2. Step 2: Convert to fraction form
    395,312.76/545,527.60 = 214,019.88/x
  3. Step 3: Cross multiply
    395,312.76x = 545,527.60 × 214,019.88
  4. Step 4: Simplify right side
    395,312.76x = 116,753,751,488.69
  5. Step 5: Solve for x
    x = 116,753,751,488.69/395,312.76
  6. Step 6: Final answer
    x = 295,345.26

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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.