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Finding the Fourth Proportional to 274,208.60, 411,312.90 and 256,493.90

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Solution

The fourth proportional to 274,208.60, 411,312.90 and 256,493.90 is: 384,740.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,208.60 : 411,312.90 = 256,493.90 : x
  2. Step 2: Convert to fraction form
    274,208.60/411,312.90 = 256,493.90/x
  3. Step 3: Cross multiply
    274,208.60x = 411,312.90 × 256,493.90
  4. Step 4: Simplify right side
    274,208.60x = 105,499,249,841.31
  5. Step 5: Solve for x
    x = 105,499,249,841.31/274,208.60
  6. Step 6: Final answer
    x = 384,740.85

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1.5x scale

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.