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Finding the Fourth Proportional to 316,330.95, 436,536.71 and 173,091

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Solution

The fourth proportional to 316,330.95, 436,536.71 and 173,091 is: 238,865.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,330.95 : 436,536.71 = 173,091 : x
  2. Step 2: Convert to fraction form
    316,330.95/436,536.71 = 173,091/x
  3. Step 3: Cross multiply
    316,330.95x = 436,536.71 × 173,091
  4. Step 4: Simplify right side
    316,330.95x = 75,560,575,670.61
  5. Step 5: Solve for x
    x = 75,560,575,670.61/316,330.95
  6. Step 6: Final answer
    x = 238,865.58

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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.