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Finding the Fourth Proportional to 318,312, 439,274.24 and 175,074.40

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Solution

The fourth proportional to 318,312, 439,274.24 and 175,074.40 is: 241,604.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,312 : 439,274.24 = 175,074.40 : x
  2. Step 2: Convert to fraction form
    318,312/439,274.24 = 175,074.40/x
  3. Step 3: Cross multiply
    318,312x = 439,274.24 × 175,074.40
  4. Step 4: Simplify right side
    318,312x = 76,905,674,003.46
  5. Step 5: Solve for x
    x = 76,905,674,003.46/318,312
  6. Step 6: Final answer
    x = 241,604.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.