Home / 285,403.70-428,126.07-98,412.50

Finding the Fourth Proportional to 285,403.70, 428,126.07 and 98,412.50

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Solution

The fourth proportional to 285,403.70, 428,126.07 and 98,412.50 is: 147,625.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,403.70 : 428,126.07 = 98,412.50 : x
  2. Step 2: Convert to fraction form
    285,403.70/428,126.07 = 98,412.50/x
  3. Step 3: Cross multiply
    285,403.70x = 428,126.07 × 98,412.50
  4. Step 4: Simplify right side
    285,403.70x = 42,132,956,863.88
  5. Step 5: Solve for x
    x = 42,132,956,863.88/285,403.70
  6. Step 6: Final answer
    x = 147,625.83

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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.