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Finding the Fourth Proportional to 328,887.68, 493,330.76 and 129,068.33

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Solution

The fourth proportional to 328,887.68, 493,330.76 and 129,068.33 is: 193,602.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,887.68 : 493,330.76 = 129,068.33 : x
  2. Step 2: Convert to fraction form
    328,887.68/493,330.76 = 129,068.33/x
  3. Step 3: Cross multiply
    328,887.68x = 493,330.76 × 129,068.33
  4. Step 4: Simplify right side
    328,887.68x = 63,673,374,218.84
  5. Step 5: Solve for x
    x = 63,673,374,218.84/328,887.68
  6. Step 6: Final answer
    x = 193,602.19

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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.