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Finding the Fourth Proportional to 258,624.70, 356,898.66 and 145,447.45

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Solution

The fourth proportional to 258,624.70, 356,898.66 and 145,447.45 is: 200,715.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,624.70 : 356,898.66 = 145,447.45 : x
  2. Step 2: Convert to fraction form
    258,624.70/356,898.66 = 145,447.45/x
  3. Step 3: Cross multiply
    258,624.70x = 356,898.66 × 145,447.45
  4. Step 4: Simplify right side
    258,624.70x = 51,909,998,567.74
  5. Step 5: Solve for x
    x = 51,909,998,567.74/258,624.70
  6. Step 6: Final answer
    x = 200,715.55

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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.