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Finding the Fourth Proportional to 384,171.48, 529,663.80 and 315,006.11

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Solution

The fourth proportional to 384,171.48, 529,663.80 and 315,006.11 is: 434,304.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,171.48 : 529,663.80 = 315,006.11 : x
  2. Step 2: Convert to fraction form
    384,171.48/529,663.80 = 315,006.11/x
  3. Step 3: Cross multiply
    384,171.48x = 529,663.80 × 315,006.11
  4. Step 4: Simplify right side
    384,171.48x = 166,847,334,569.98
  5. Step 5: Solve for x
    x = 166,847,334,569.98/384,171.48
  6. Step 6: Final answer
    x = 434,304.32

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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.