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Finding the Fourth Proportional to 636,455.20, 954,661.20 and 163,145.20

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Solution

The fourth proportional to 636,455.20, 954,661.20 and 163,145.20 is: 244,712.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,455.20 : 954,661.20 = 163,145.20 : x
  2. Step 2: Convert to fraction form
    636,455.20/954,661.20 = 163,145.20/x
  3. Step 3: Cross multiply
    636,455.20x = 954,661.20 × 163,145.20
  4. Step 4: Simplify right side
    636,455.20x = 155,748,392,406.24
  5. Step 5: Solve for x
    x = 155,748,392,406.24/636,455.20
  6. Step 6: Final answer
    x = 244,712.26

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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.