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Finding the Fourth Proportional to 531,472.32, 733,341.60 and 305,112.96

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Solution

The fourth proportional to 531,472.32, 733,341.60 and 305,112.96 is: 421,004.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,472.32 : 733,341.60 = 305,112.96 : x
  2. Step 2: Convert to fraction form
    531,472.32/733,341.60 = 305,112.96/x
  3. Step 3: Cross multiply
    531,472.32x = 733,341.60 × 305,112.96
  4. Step 4: Simplify right side
    531,472.32x = 223,752,026,267.14
  5. Step 5: Solve for x
    x = 223,752,026,267.14/531,472.32
  6. Step 6: Final answer
    x = 421,004.10

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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.