Home / 283,985.76-391,898.16-156,666.72

Finding the Fourth Proportional to 283,985.76, 391,898.16 and 156,666.72

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Solution

The fourth proportional to 283,985.76, 391,898.16 and 156,666.72 is: 216,198.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,985.76 : 391,898.16 = 156,666.72 : x
  2. Step 2: Convert to fraction form
    283,985.76/391,898.16 = 156,666.72/x
  3. Step 3: Cross multiply
    283,985.76x = 391,898.16 × 156,666.72
  4. Step 4: Simplify right side
    283,985.76x = 61,397,399,301.24
  5. Step 5: Solve for x
    x = 61,397,399,301.24/283,985.76
  6. Step 6: Final answer
    x = 216,198.87

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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.