Home / 425,526.77-638,435.96-145,240.85

Finding the Fourth Proportional to 425,526.77, 638,435.96 and 145,240.85

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Solution

The fourth proportional to 425,526.77, 638,435.96 and 145,240.85 is: 217,911.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,526.77 : 638,435.96 = 145,240.85 : x
  2. Step 2: Convert to fraction form
    425,526.77/638,435.96 = 145,240.85/x
  3. Step 3: Cross multiply
    425,526.77x = 638,435.96 × 145,240.85
  4. Step 4: Simplify right side
    425,526.77x = 92,726,977,582.58
  5. Step 5: Solve for x
    x = 92,726,977,582.58/425,526.77
  6. Step 6: Final answer
    x = 217,911.03

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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.