Home / 278,298.90-384,325.29-192,477.78

Finding the Fourth Proportional to 278,298.90, 384,325.29 and 192,477.78

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Solution

The fourth proportional to 278,298.90, 384,325.29 and 192,477.78 is: 265,808.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,298.90 : 384,325.29 = 192,477.78 : x
  2. Step 2: Convert to fraction form
    278,298.90/384,325.29 = 192,477.78/x
  3. Step 3: Cross multiply
    278,298.90x = 384,325.29 × 192,477.78
  4. Step 4: Simplify right side
    278,298.90x = 73,974,078,617.06
  5. Step 5: Solve for x
    x = 73,974,078,617.06/278,298.90
  6. Step 6: Final answer
    x = 265,808.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.