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Finding the Fourth Proportional to 215,698.17, 297,650.40 and 118,897.80

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Solution

The fourth proportional to 215,698.17, 297,650.40 and 118,897.80 is: 164,071.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,698.17 : 297,650.40 = 118,897.80 : x
  2. Step 2: Convert to fraction form
    215,698.17/297,650.40 = 118,897.80/x
  3. Step 3: Cross multiply
    215,698.17x = 297,650.40 × 118,897.80
  4. Step 4: Simplify right side
    215,698.17x = 35,389,977,729.12
  5. Step 5: Solve for x
    x = 35,389,977,729.12/215,698.17
  6. Step 6: Final answer
    x = 164,071.76

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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.