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Finding the Fourth Proportional to 478,744.70, 718,222.35 and 141,811.70

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Solution

The fourth proportional to 478,744.70, 718,222.35 and 141,811.70 is: 212,748.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,744.70 : 718,222.35 = 141,811.70 : x
  2. Step 2: Convert to fraction form
    478,744.70/718,222.35 = 141,811.70/x
  3. Step 3: Cross multiply
    478,744.70x = 718,222.35 × 141,811.70
  4. Step 4: Simplify right side
    478,744.70x = 101,852,332,431.50
  5. Step 5: Solve for x
    x = 101,852,332,431.50/478,744.70
  6. Step 6: Final answer
    x = 212,748.74

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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.