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Finding the Fourth Proportional to 395,626, 545,963.88 and 216,774.16

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Solution

The fourth proportional to 395,626, 545,963.88 and 216,774.16 is: 299,148.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,626 : 545,963.88 = 216,774.16 : x
  2. Step 2: Convert to fraction form
    395,626/545,963.88 = 216,774.16/x
  3. Step 3: Cross multiply
    395,626x = 545,963.88 × 216,774.16
  4. Step 4: Simplify right side
    395,626x = 118,350,861,477.34
  5. Step 5: Solve for x
    x = 118,350,861,477.34/395,626
  6. Step 6: Final answer
    x = 299,148.34

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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.