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Finding the Fourth Proportional to 384,173.75, 529,666.90 and 315,008.36

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Solution

The fourth proportional to 384,173.75, 529,666.90 and 315,008.36 is: 434,307.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,173.75 : 529,666.90 = 315,008.36 : x
  2. Step 2: Convert to fraction form
    384,173.75/529,666.90 = 315,008.36/x
  3. Step 3: Cross multiply
    384,173.75x = 529,666.90 × 315,008.36
  4. Step 4: Simplify right side
    384,173.75x = 166,849,500,065.68
  5. Step 5: Solve for x
    x = 166,849,500,065.68/384,173.75
  6. Step 6: Final answer
    x = 434,307.39

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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.