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Finding the Fourth Proportional to 510,040.20, 765,089.10 and 155,065.80

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Solution

The fourth proportional to 510,040.20, 765,089.10 and 155,065.80 is: 232,607.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,040.20 : 765,089.10 = 155,065.80 : x
  2. Step 2: Convert to fraction form
    510,040.20/765,089.10 = 155,065.80/x
  3. Step 3: Cross multiply
    510,040.20x = 765,089.10 × 155,065.80
  4. Step 4: Simplify right side
    510,040.20x = 118,639,153,362.78
  5. Step 5: Solve for x
    x = 118,639,153,362.78/510,040.20
  6. Step 6: Final answer
    x = 232,607.46

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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.