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Finding the Fourth Proportional to 316,111.69, 436,273.99 and 207,307.53

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Solution

The fourth proportional to 316,111.69, 436,273.99 and 207,307.53 is: 286,110.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,111.69 : 436,273.99 = 207,307.53 : x
  2. Step 2: Convert to fraction form
    316,111.69/436,273.99 = 207,307.53/x
  3. Step 3: Cross multiply
    316,111.69x = 436,273.99 × 207,307.53
  4. Step 4: Simplify right side
    316,111.69x = 90,442,882,233.61
  5. Step 5: Solve for x
    x = 90,442,882,233.61/316,111.69
  6. Step 6: Final answer
    x = 286,110.53

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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.