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Finding the Fourth Proportional to 312,291.40, 468,367.03 and 143,649.76

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Solution

The fourth proportional to 312,291.40, 468,367.03 and 143,649.76 is: 215,442.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,291.40 : 468,367.03 = 143,649.76 : x
  2. Step 2: Convert to fraction form
    312,291.40/468,367.03 = 143,649.76/x
  3. Step 3: Cross multiply
    312,291.40x = 468,367.03 × 143,649.76
  4. Step 4: Simplify right side
    312,291.40x = 67,280,811,451.41
  5. Step 5: Solve for x
    x = 67,280,811,451.41/312,291.40
  6. Step 6: Final answer
    x = 215,442.41

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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.