Home / 353,860.47-530,348.05-278,683.72

Finding the Fourth Proportional to 353,860.47, 530,348.05 and 278,683.72

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Solution

The fourth proportional to 353,860.47, 530,348.05 and 278,683.72 is: 417,676.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,860.47 : 530,348.05 = 278,683.72 : x
  2. Step 2: Convert to fraction form
    353,860.47/530,348.05 = 278,683.72/x
  3. Step 3: Cross multiply
    353,860.47x = 530,348.05 × 278,683.72
  4. Step 4: Simplify right side
    353,860.47x = 147,799,367,468.75
  5. Step 5: Solve for x
    x = 147,799,367,468.75/353,860.47
  6. Step 6: Final answer
    x = 417,676.97

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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.