Home / 429,962.78-645,021.72-177,105.23

Finding the Fourth Proportional to 429,962.78, 645,021.72 and 177,105.23

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Solution

The fourth proportional to 429,962.78, 645,021.72 and 177,105.23 is: 265,689.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,962.78 : 645,021.72 = 177,105.23 : x
  2. Step 2: Convert to fraction form
    429,962.78/645,021.72 = 177,105.23/x
  3. Step 3: Cross multiply
    429,962.78x = 645,021.72 × 177,105.23
  4. Step 4: Simplify right side
    429,962.78x = 114,236,720,075.60
  5. Step 5: Solve for x
    x = 114,236,720,075.60/429,962.78
  6. Step 6: Final answer
    x = 265,689.79

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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.