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Finding the Fourth Proportional to 318,275.70, 439,211.76 and 175,035.78

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Solution

The fourth proportional to 318,275.70, 439,211.76 and 175,035.78 is: 241,544.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,275.70 : 439,211.76 = 175,035.78 : x
  2. Step 2: Convert to fraction form
    318,275.70/439,211.76 = 175,035.78/x
  3. Step 3: Cross multiply
    318,275.70x = 439,211.76 × 175,035.78
  4. Step 4: Simplify right side
    318,275.70x = 76,877,772,996.77
  5. Step 5: Solve for x
    x = 76,877,772,996.77/318,275.70
  6. Step 6: Final answer
    x = 241,544.59

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1.5x scale

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.