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Finding the Fourth Proportional to 258,697.70, 357,001.50 and 145,521.26

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Solution

The fourth proportional to 258,697.70, 357,001.50 and 145,521.26 is: 200,818.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,697.70 : 357,001.50 = 145,521.26 : x
  2. Step 2: Convert to fraction form
    258,697.70/357,001.50 = 145,521.26/x
  3. Step 3: Cross multiply
    258,697.70x = 357,001.50 × 145,521.26
  4. Step 4: Simplify right side
    258,697.70x = 51,951,308,101.89
  5. Step 5: Solve for x
    x = 51,951,308,101.89/258,697.70
  6. Step 6: Final answer
    x = 200,818.59

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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.