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Finding the Fourth Proportional to 285,034.83, 426,699.86 and 172,374.09

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Solution

The fourth proportional to 285,034.83, 426,699.86 and 172,374.09 is: 258,045.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,034.83 : 426,699.86 = 172,374.09 : x
  2. Step 2: Convert to fraction form
    285,034.83/426,699.86 = 172,374.09/x
  3. Step 3: Cross multiply
    285,034.83x = 426,699.86 × 172,374.09
  4. Step 4: Simplify right side
    285,034.83x = 73,551,999,208.76
  5. Step 5: Solve for x
    x = 73,551,999,208.76/285,034.83
  6. Step 6: Final answer
    x = 258,045.65

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1.5x scale

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.