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Finding the Fourth Proportional to 258,672.83, 356,980.16 and 145,495.58

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Solution

The fourth proportional to 258,672.83, 356,980.16 and 145,495.58 is: 200,790.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,672.83 : 356,980.16 = 145,495.58 : x
  2. Step 2: Convert to fraction form
    258,672.83/356,980.16 = 145,495.58/x
  3. Step 3: Cross multiply
    258,672.83x = 356,980.16 × 145,495.58
  4. Step 4: Simplify right side
    258,672.83x = 51,939,034,006.53
  5. Step 5: Solve for x
    x = 51,939,034,006.53/258,672.83
  6. Step 6: Final answer
    x = 200,790.45

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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.