Home / 285,787.07-428,680.71-105,934.34

Finding the Fourth Proportional to 285,787.07, 428,680.71 and 105,934.34

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Solution

The fourth proportional to 285,787.07, 428,680.71 and 105,934.34 is: 158,901.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,787.07 : 428,680.71 = 105,934.34 : x
  2. Step 2: Convert to fraction form
    285,787.07/428,680.71 = 105,934.34/x
  3. Step 3: Cross multiply
    285,787.07x = 428,680.71 × 105,934.34
  4. Step 4: Simplify right side
    285,787.07x = 45,412,005,941.18
  5. Step 5: Solve for x
    x = 45,412,005,941.18/285,787.07
  6. Step 6: Final answer
    x = 158,901.54

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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.