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Finding the Fourth Proportional to 288,408.36, 432,612.54 and 188,652.42

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Solution

The fourth proportional to 288,408.36, 432,612.54 and 188,652.42 is: 282,978.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,408.36 : 432,612.54 = 188,652.42 : x
  2. Step 2: Convert to fraction form
    288,408.36/432,612.54 = 188,652.42/x
  3. Step 3: Cross multiply
    288,408.36x = 432,612.54 × 188,652.42
  4. Step 4: Simplify right side
    288,408.36x = 81,613,402,593.35
  5. Step 5: Solve for x
    x = 81,613,402,593.35/288,408.36
  6. Step 6: Final answer
    x = 282,978.63

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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.