Home / 380,057.20-570,104.16-99,574.72

Finding the Fourth Proportional to 380,057.20, 570,104.16 and 99,574.72

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Solution

The fourth proportional to 380,057.20, 570,104.16 and 99,574.72 is: 149,366.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,057.20 : 570,104.16 = 99,574.72 : x
  2. Step 2: Convert to fraction form
    380,057.20/570,104.16 = 99,574.72/x
  3. Step 3: Cross multiply
    380,057.20x = 570,104.16 × 99,574.72
  4. Step 4: Simplify right side
    380,057.20x = 56,767,962,102.84
  5. Step 5: Solve for x
    x = 56,767,962,102.84/380,057.20
  6. Step 6: Final answer
    x = 149,366.89

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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.