Home / 429,988.34-645,076.22-130,492.35

Finding the Fourth Proportional to 429,988.34, 645,076.22 and 130,492.35

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Solution

The fourth proportional to 429,988.34, 645,076.22 and 130,492.35 is: 195,766.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,988.34 : 645,076.22 = 130,492.35 : x
  2. Step 2: Convert to fraction form
    429,988.34/645,076.22 = 130,492.35/x
  3. Step 3: Cross multiply
    429,988.34x = 645,076.22 × 130,492.35
  4. Step 4: Simplify right side
    429,988.34x = 84,177,511,876.92
  5. Step 5: Solve for x
    x = 84,177,511,876.92/429,988.34
  6. Step 6: Final answer
    x = 195,766.96

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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.