Home / 348,005.40-521,586.90-147,905.70

Finding the Fourth Proportional to 348,005.40, 521,586.90 and 147,905.70

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Solution

The fourth proportional to 348,005.40, 521,586.90 and 147,905.70 is: 221,679.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,005.40 : 521,586.90 = 147,905.70 : x
  2. Step 2: Convert to fraction form
    348,005.40/521,586.90 = 147,905.70/x
  3. Step 3: Cross multiply
    348,005.40x = 521,586.90 × 147,905.70
  4. Step 4: Simplify right side
    348,005.40x = 77,145,675,555.33
  5. Step 5: Solve for x
    x = 77,145,675,555.33/348,005.40
  6. Step 6: Final answer
    x = 221,679.54

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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.