Home / 430,531.74-645,895.89-131,054.76

Finding the Fourth Proportional to 430,531.74, 645,895.89 and 131,054.76

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Solution

The fourth proportional to 430,531.74, 645,895.89 and 131,054.76 is: 196,612.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,531.74 : 645,895.89 = 131,054.76 : x
  2. Step 2: Convert to fraction form
    430,531.74/645,895.89 = 131,054.76/x
  3. Step 3: Cross multiply
    430,531.74x = 645,895.89 × 131,054.76
  4. Step 4: Simplify right side
    430,531.74x = 84,647,730,848.94
  5. Step 5: Solve for x
    x = 84,647,730,848.94/430,531.74
  6. Step 6: Final answer
    x = 196,612.06

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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.