Home / 379,811.72-569,541.93-139,865.03

Finding the Fourth Proportional to 379,811.72, 569,541.93 and 139,865.03

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Solution

The fourth proportional to 379,811.72, 569,541.93 and 139,865.03 is: 209,732.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,811.72 : 569,541.93 = 139,865.03 : x
  2. Step 2: Convert to fraction form
    379,811.72/569,541.93 = 139,865.03/x
  3. Step 3: Cross multiply
    379,811.72x = 569,541.93 × 139,865.03
  4. Step 4: Simplify right side
    379,811.72x = 79,658,999,125.71
  5. Step 5: Solve for x
    x = 79,658,999,125.71/379,811.72
  6. Step 6: Final answer
    x = 209,732.86

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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.