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Finding the Fourth Proportional to 210,630.70, 316,070.85 and 77,604.46

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Solution

The fourth proportional to 210,630.70, 316,070.85 and 77,604.46 is: 116,452.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,630.70 : 316,070.85 = 77,604.46 : x
  2. Step 2: Convert to fraction form
    210,630.70/316,070.85 = 77,604.46/x
  3. Step 3: Cross multiply
    210,630.70x = 316,070.85 × 77,604.46
  4. Step 4: Simplify right side
    210,630.70x = 24,528,507,635.99
  5. Step 5: Solve for x
    x = 24,528,507,635.99/210,630.70
  6. Step 6: Final answer
    x = 116,452.67

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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.