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Finding the Fourth Proportional to 288,319.80, 432,090.90 and 193,279.80

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Solution

The fourth proportional to 288,319.80, 432,090.90 and 193,279.80 is: 289,659.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,319.80 : 432,090.90 = 193,279.80 : x
  2. Step 2: Convert to fraction form
    288,319.80/432,090.90 = 193,279.80/x
  3. Step 3: Cross multiply
    288,319.80x = 432,090.90 × 193,279.80
  4. Step 4: Simplify right side
    288,319.80x = 83,514,442,733.82
  5. Step 5: Solve for x
    x = 83,514,442,733.82/288,319.80
  6. Step 6: Final answer
    x = 289,659.06

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1.5x scale

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.