Home / 389,410.36-537,393.30-228,381.58

Finding the Fourth Proportional to 389,410.36, 537,393.30 and 228,381.58

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Solution

The fourth proportional to 389,410.36, 537,393.30 and 228,381.58 is: 315,170.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,410.36 : 537,393.30 = 228,381.58 : x
  2. Step 2: Convert to fraction form
    389,410.36/537,393.30 = 228,381.58/x
  3. Step 3: Cross multiply
    389,410.36x = 537,393.30 × 228,381.58
  4. Step 4: Simplify right side
    389,410.36x = 122,730,730,935.41
  5. Step 5: Solve for x
    x = 122,730,730,935.41/389,410.36
  6. Step 6: Final answer
    x = 315,170.69

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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.