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Finding the Fourth Proportional to 426,564.45, 639,354.56 and 160,155

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Solution

The fourth proportional to 426,564.45, 639,354.56 and 160,155 is: 240,047.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,564.45 : 639,354.56 = 160,155 : x
  2. Step 2: Convert to fraction form
    426,564.45/639,354.56 = 160,155/x
  3. Step 3: Cross multiply
    426,564.45x = 639,354.56 × 160,155
  4. Step 4: Simplify right side
    426,564.45x = 102,395,828,756.03
  5. Step 5: Solve for x
    x = 102,395,828,756.03/426,564.45
  6. Step 6: Final answer
    x = 240,047.73

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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.