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Finding the Fourth Proportional to 319,693.02, 479,535.33 and 91,994.58

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Solution

The fourth proportional to 319,693.02, 479,535.33 and 91,994.58 is: 137,990.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,693.02 : 479,535.33 = 91,994.58 : x
  2. Step 2: Convert to fraction form
    319,693.02/479,535.33 = 91,994.58/x
  3. Step 3: Cross multiply
    319,693.02x = 479,535.33 × 91,994.58
  4. Step 4: Simplify right side
    319,693.02x = 44,114,651,278.51
  5. Step 5: Solve for x
    x = 44,114,651,278.51/319,693.02
  6. Step 6: Final answer
    x = 137,990.66

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1.5x scale

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.