Home / 389,128.80-583,261.20-152,392.80

Finding the Fourth Proportional to 389,128.80, 583,261.20 and 152,392.80

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Solution

The fourth proportional to 389,128.80, 583,261.20 and 152,392.80 is: 228,420.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,128.80 : 583,261.20 = 152,392.80 : x
  2. Step 2: Convert to fraction form
    389,128.80/583,261.20 = 152,392.80/x
  3. Step 3: Cross multiply
    389,128.80x = 583,261.20 × 152,392.80
  4. Step 4: Simplify right side
    389,128.80x = 88,884,807,399.36
  5. Step 5: Solve for x
    x = 88,884,807,399.36/389,128.80
  6. Step 6: Final answer
    x = 228,420.02

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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.