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Finding the Fourth Proportional to 462,424.50, 693,636.78 and 130,000.50

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Solution

The fourth proportional to 462,424.50, 693,636.78 and 130,000.50 is: 195,000.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,424.50 : 693,636.78 = 130,000.50 : x
  2. Step 2: Convert to fraction form
    462,424.50/693,636.78 = 130,000.50/x
  3. Step 3: Cross multiply
    462,424.50x = 693,636.78 × 130,000.50
  4. Step 4: Simplify right side
    462,424.50x = 90,173,128,218.39
  5. Step 5: Solve for x
    x = 90,173,128,218.39/462,424.50
  6. Step 6: Final answer
    x = 195,000.76

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Similar ratio
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1.5x scale

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.