Home / 430,603.77-645,999-131,076.52

Finding the Fourth Proportional to 430,603.77, 645,999 and 131,076.52

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Solution

The fourth proportional to 430,603.77, 645,999 and 131,076.52 is: 196,643.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,603.77 : 645,999 = 131,076.52 : x
  2. Step 2: Convert to fraction form
    430,603.77/645,999 = 131,076.52/x
  3. Step 3: Cross multiply
    430,603.77x = 645,999 × 131,076.52
  4. Step 4: Simplify right side
    430,603.77x = 84,675,299,228.48
  5. Step 5: Solve for x
    x = 84,675,299,228.48/430,603.77
  6. Step 6: Final answer
    x = 196,643.19

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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.