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Finding the Fourth Proportional to 318,770.36, 478,040.64 and 105,498.87

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Solution

The fourth proportional to 318,770.36, 478,040.64 and 105,498.87 is: 158,210.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,770.36 : 478,040.64 = 105,498.87 : x
  2. Step 2: Convert to fraction form
    318,770.36/478,040.64 = 105,498.87/x
  3. Step 3: Cross multiply
    318,770.36x = 478,040.64 × 105,498.87
  4. Step 4: Simplify right side
    318,770.36x = 50,432,747,334.08
  5. Step 5: Solve for x
    x = 50,432,747,334.08/318,770.36
  6. Step 6: Final answer
    x = 158,210.28

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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.