Home / 285,048.32-393,363.20-155,985.41

Finding the Fourth Proportional to 285,048.32, 393,363.20 and 155,985.41

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Solution

The fourth proportional to 285,048.32, 393,363.20 and 155,985.41 is: 215,257.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,048.32 : 393,363.20 = 155,985.41 : x
  2. Step 2: Convert to fraction form
    285,048.32/393,363.20 = 155,985.41/x
  3. Step 3: Cross multiply
    285,048.32x = 393,363.20 × 155,985.41
  4. Step 4: Simplify right side
    285,048.32x = 61,358,921,404.28
  5. Step 5: Solve for x
    x = 61,358,921,404.28/285,048.32
  6. Step 6: Final answer
    x = 215,257.97

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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.