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Finding the Fourth Proportional to 245,249.34, 338,536.57 and 143,307.93

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Solution

The fourth proportional to 245,249.34, 338,536.57 and 143,307.93 is: 197,818.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,249.34 : 338,536.57 = 143,307.93 : x
  2. Step 2: Convert to fraction form
    245,249.34/338,536.57 = 143,307.93/x
  3. Step 3: Cross multiply
    245,249.34x = 338,536.57 × 143,307.93
  4. Step 4: Simplify right side
    245,249.34x = 48,514,972,666.78
  5. Step 5: Solve for x
    x = 48,514,972,666.78/245,249.34
  6. Step 6: Final answer
    x = 197,818.98

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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.