Home / 213,541.39-320,430.31-127,941.89

Finding the Fourth Proportional to 213,541.39, 320,430.31 and 127,941.89

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Solution

The fourth proportional to 213,541.39, 320,430.31 and 127,941.89 is: 191,983.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,541.39 : 320,430.31 = 127,941.89 : x
  2. Step 2: Convert to fraction form
    213,541.39/320,430.31 = 127,941.89/x
  3. Step 3: Cross multiply
    213,541.39x = 320,430.31 × 127,941.89
  4. Step 4: Simplify right side
    213,541.39x = 40,996,459,894.86
  5. Step 5: Solve for x
    x = 40,996,459,894.86/213,541.39
  6. Step 6: Final answer
    x = 191,983.67

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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.