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Finding the Fourth Proportional to 510,011.72, 765,042.54 and 194,409.80

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Solution

The fourth proportional to 510,011.72, 765,042.54 and 194,409.80 is: 291,624.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,011.72 : 765,042.54 = 194,409.80 : x
  2. Step 2: Convert to fraction form
    510,011.72/765,042.54 = 194,409.80/x
  3. Step 3: Cross multiply
    510,011.72x = 765,042.54 × 194,409.80
  4. Step 4: Simplify right side
    510,011.72x = 148,731,767,192.89
  5. Step 5: Solve for x
    x = 148,731,767,192.89/510,011.72
  6. Step 6: Final answer
    x = 291,624.21

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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.