Home / 272,570.10-408,938.90-139,543.74

Finding the Fourth Proportional to 272,570.10, 408,938.90 and 139,543.74

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Solution

The fourth proportional to 272,570.10, 408,938.90 and 139,543.74 is: 209,358.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,570.10 : 408,938.90 = 139,543.74 : x
  2. Step 2: Convert to fraction form
    272,570.10/408,938.90 = 139,543.74/x
  3. Step 3: Cross multiply
    272,570.10x = 408,938.90 × 139,543.74
  4. Step 4: Simplify right side
    272,570.10x = 57,064,863,537.49
  5. Step 5: Solve for x
    x = 57,064,863,537.49/272,570.10
  6. Step 6: Final answer
    x = 209,358.49

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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.