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Finding the Fourth Proportional to 284,944.80, 427,417.20 and 272,810.40

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Solution

The fourth proportional to 284,944.80, 427,417.20 and 272,810.40 is: 409,215.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,944.80 : 427,417.20 = 272,810.40 : x
  2. Step 2: Convert to fraction form
    284,944.80/427,417.20 = 272,810.40/x
  3. Step 3: Cross multiply
    284,944.80x = 427,417.20 × 272,810.40
  4. Step 4: Simplify right side
    284,944.80x = 116,603,857,298.88
  5. Step 5: Solve for x
    x = 116,603,857,298.88/284,944.80
  6. Step 6: Final answer
    x = 409,215.60

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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.