Home / 348,021.40-521,610.90-147,921.70

Finding the Fourth Proportional to 348,021.40, 521,610.90 and 147,921.70

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Solution

The fourth proportional to 348,021.40, 521,610.90 and 147,921.70 is: 221,703.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,021.40 : 521,610.90 = 147,921.70 : x
  2. Step 2: Convert to fraction form
    348,021.40/521,610.90 = 147,921.70/x
  3. Step 3: Cross multiply
    348,021.40x = 521,610.90 × 147,921.70
  4. Step 4: Simplify right side
    348,021.40x = 77,157,571,066.53
  5. Step 5: Solve for x
    x = 77,157,571,066.53/348,021.40
  6. Step 6: Final answer
    x = 221,703.52

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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.