Home / 430,748.48-645,723.36-190,734.55

Finding the Fourth Proportional to 430,748.48, 645,723.36 and 190,734.55

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Solution

The fourth proportional to 430,748.48, 645,723.36 and 190,734.55 is: 285,924.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,748.48 : 645,723.36 = 190,734.55 : x
  2. Step 2: Convert to fraction form
    430,748.48/645,723.36 = 190,734.55/x
  3. Step 3: Cross multiply
    430,748.48x = 645,723.36 × 190,734.55
  4. Step 4: Simplify right side
    430,748.48x = 123,161,752,879.78
  5. Step 5: Solve for x
    x = 123,161,752,879.78/430,748.48
  6. Step 6: Final answer
    x = 285,924.98

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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.