Home / 379,288.17-569,015.40-142,630.77

Finding the Fourth Proportional to 379,288.17, 569,015.40 and 142,630.77

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Solution

The fourth proportional to 379,288.17, 569,015.40 and 142,630.77 is: 213,977.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,288.17 : 569,015.40 = 142,630.77 : x
  2. Step 2: Convert to fraction form
    379,288.17/569,015.40 = 142,630.77/x
  3. Step 3: Cross multiply
    379,288.17x = 569,015.40 × 142,630.77
  4. Step 4: Simplify right side
    379,288.17x = 81,159,104,643.86
  5. Step 5: Solve for x
    x = 81,159,104,643.86/379,288.17
  6. Step 6: Final answer
    x = 213,977.42

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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.