Home / 285,195.15-393,567.84-156,145.35

Finding the Fourth Proportional to 285,195.15, 393,567.84 and 156,145.35

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Solution

The fourth proportional to 285,195.15, 393,567.84 and 156,145.35 is: 215,479.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,195.15 : 393,567.84 = 156,145.35 : x
  2. Step 2: Convert to fraction form
    285,195.15/393,567.84 = 156,145.35/x
  3. Step 3: Cross multiply
    285,195.15x = 393,567.84 × 156,145.35
  4. Step 4: Simplify right side
    285,195.15x = 61,453,788,125.54
  5. Step 5: Solve for x
    x = 61,453,788,125.54/285,195.15
  6. Step 6: Final answer
    x = 215,479.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.