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Finding the Fourth Proportional to 383,178.72, 529,302.96 and 347,409.12

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Solution

The fourth proportional to 383,178.72, 529,302.96 and 347,409.12 is: 479,892.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,178.72 : 529,302.96 = 347,409.12 : x
  2. Step 2: Convert to fraction form
    383,178.72/529,302.96 = 347,409.12/x
  3. Step 3: Cross multiply
    383,178.72x = 529,302.96 × 347,409.12
  4. Step 4: Simplify right side
    383,178.72x = 183,884,675,547.00
  5. Step 5: Solve for x
    x = 183,884,675,547.00/383,178.72
  6. Step 6: Final answer
    x = 479,892.71

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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.