Home / 380,945.34-525,676.20-208,835.76

Finding the Fourth Proportional to 380,945.34, 525,676.20 and 208,835.76

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Solution

The fourth proportional to 380,945.34, 525,676.20 and 208,835.76 is: 288,177.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,945.34 : 525,676.20 = 208,835.76 : x
  2. Step 2: Convert to fraction form
    380,945.34/525,676.20 = 208,835.76/x
  3. Step 3: Cross multiply
    380,945.34x = 525,676.20 × 208,835.76
  4. Step 4: Simplify right side
    380,945.34x = 109,779,988,740.91
  5. Step 5: Solve for x
    x = 109,779,988,740.91/380,945.34
  6. Step 6: Final answer
    x = 288,177.80

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1.5x scale

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.