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Finding the Fourth Proportional to 354,341.11, 488,593.47 and 289,609.45

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Solution

The fourth proportional to 354,341.11, 488,593.47 and 289,609.45 is: 399,336.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,341.11 : 488,593.47 = 289,609.45 : x
  2. Step 2: Convert to fraction form
    354,341.11/488,593.47 = 289,609.45/x
  3. Step 3: Cross multiply
    354,341.11x = 488,593.47 × 289,609.45
  4. Step 4: Simplify right side
    354,341.11x = 141,501,283,677.32
  5. Step 5: Solve for x
    x = 141,501,283,677.32/354,341.11
  6. Step 6: Final answer
    x = 399,336.34

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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.