Home / 379,953.12-570,153.46-140,235.78

Finding the Fourth Proportional to 379,953.12, 570,153.46 and 140,235.78

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Solution

The fourth proportional to 379,953.12, 570,153.46 and 140,235.78 is: 210,436.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,953.12 : 570,153.46 = 140,235.78 : x
  2. Step 2: Convert to fraction form
    379,953.12/570,153.46 = 140,235.78/x
  3. Step 3: Cross multiply
    379,953.12x = 570,153.46 × 140,235.78
  4. Step 4: Simplify right side
    379,953.12x = 79,955,915,182.80
  5. Step 5: Solve for x
    x = 79,955,915,182.80/379,953.12
  6. Step 6: Final answer
    x = 210,436.26

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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.