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Finding the Fourth Proportional to 518,810.50, 778,239.63 and 158,955.58

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Solution

The fourth proportional to 518,810.50, 778,239.63 and 158,955.58 is: 238,440.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,810.50 : 778,239.63 = 158,955.58 : x
  2. Step 2: Convert to fraction form
    518,810.50/778,239.63 = 158,955.58/x
  3. Step 3: Cross multiply
    518,810.50x = 778,239.63 × 158,955.58
  4. Step 4: Simplify right side
    518,810.50x = 123,705,531,765.64
  5. Step 5: Solve for x
    x = 123,705,531,765.64/518,810.50
  6. Step 6: Final answer
    x = 238,440.69

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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.