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Finding the Fourth Proportional to 258,875.88, 357,221.22 and 145,696.68

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Solution

The fourth proportional to 258,875.88, 357,221.22 and 145,696.68 is: 201,045.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,875.88 : 357,221.22 = 145,696.68 : x
  2. Step 2: Convert to fraction form
    258,875.88/357,221.22 = 145,696.68/x
  3. Step 3: Cross multiply
    258,875.88x = 357,221.22 × 145,696.68
  4. Step 4: Simplify right side
    258,875.88x = 52,045,945,779.55
  5. Step 5: Solve for x
    x = 52,045,945,779.55/258,875.88
  6. Step 6: Final answer
    x = 201,045.94

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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.