Home / 430,515.24-645,871.14-131,038.26

Finding the Fourth Proportional to 430,515.24, 645,871.14 and 131,038.26

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Solution

The fourth proportional to 430,515.24, 645,871.14 and 131,038.26 is: 196,587.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,515.24 : 645,871.14 = 131,038.26 : x
  2. Step 2: Convert to fraction form
    430,515.24/645,871.14 = 131,038.26/x
  3. Step 3: Cross multiply
    430,515.24x = 645,871.14 × 131,038.26
  4. Step 4: Simplify right side
    430,515.24x = 84,633,830,369.82
  5. Step 5: Solve for x
    x = 84,633,830,369.82/430,515.24
  6. Step 6: Final answer
    x = 196,587.30

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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.