Home / 426,280.20-638,969.77-141,894.87

Finding the Fourth Proportional to 426,280.20, 638,969.77 and 141,894.87

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Solution

The fourth proportional to 426,280.20, 638,969.77 and 141,894.87 is: 212,692.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,280.20 : 638,969.77 = 141,894.87 : x
  2. Step 2: Convert to fraction form
    426,280.20/638,969.77 = 141,894.87/x
  3. Step 3: Cross multiply
    426,280.20x = 638,969.77 × 141,894.87
  4. Step 4: Simplify right side
    426,280.20x = 90,666,532,448.08
  5. Step 5: Solve for x
    x = 90,666,532,448.08/426,280.20
  6. Step 6: Final answer
    x = 212,692.34

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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.