Home / 425,828.20-638,511.90-176,535.40

Finding the Fourth Proportional to 425,828.20, 638,511.90 and 176,535.40

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Solution

The fourth proportional to 425,828.20, 638,511.90 and 176,535.40 is: 264,707.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,828.20 : 638,511.90 = 176,535.40 : x
  2. Step 2: Convert to fraction form
    425,828.20/638,511.90 = 176,535.40/x
  3. Step 3: Cross multiply
    425,828.20x = 638,511.90 × 176,535.40
  4. Step 4: Simplify right side
    425,828.20x = 112,719,953,671.26
  5. Step 5: Solve for x
    x = 112,719,953,671.26/425,828.20
  6. Step 6: Final answer
    x = 264,707.58

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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.