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Finding the Fourth Proportional to 429,666.72, 644,500.32 and 163,365.72

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Solution

The fourth proportional to 429,666.72, 644,500.32 and 163,365.72 is: 245,048.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,666.72 : 644,500.32 = 163,365.72 : x
  2. Step 2: Convert to fraction form
    429,666.72/644,500.32 = 163,365.72/x
  3. Step 3: Cross multiply
    429,666.72x = 644,500.32 × 163,365.72
  4. Step 4: Simplify right side
    429,666.72x = 105,289,258,817.03
  5. Step 5: Solve for x
    x = 105,289,258,817.03/429,666.72
  6. Step 6: Final answer
    x = 245,048.67

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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.