Home / 253,429.36-349,729.85-137,140.28

Finding the Fourth Proportional to 253,429.36, 349,729.85 and 137,140.28

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Solution

The fourth proportional to 253,429.36, 349,729.85 and 137,140.28 is: 189,252.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,429.36 : 349,729.85 = 137,140.28 : x
  2. Step 2: Convert to fraction form
    253,429.36/349,729.85 = 137,140.28/x
  3. Step 3: Cross multiply
    253,429.36x = 349,729.85 × 137,140.28
  4. Step 4: Simplify right side
    253,429.36x = 47,962,051,683.41
  5. Step 5: Solve for x
    x = 47,962,051,683.41/253,429.36
  6. Step 6: Final answer
    x = 189,252.15

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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.