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Finding the Fourth Proportional to 395,475.65, 545,756.21 and 214,187.57

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Solution

The fourth proportional to 395,475.65, 545,756.21 and 214,187.57 is: 295,578.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,475.65 : 545,756.21 = 214,187.57 : x
  2. Step 2: Convert to fraction form
    395,475.65/545,756.21 = 214,187.57/x
  3. Step 3: Cross multiply
    395,475.65x = 545,756.21 × 214,187.57
  4. Step 4: Simplify right side
    395,475.65x = 116,894,195,482.38
  5. Step 5: Solve for x
    x = 116,894,195,482.38/395,475.65
  6. Step 6: Final answer
    x = 295,578.74

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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.