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Finding the Fourth Proportional to 413,601.30, 620,985.15 and 256,137.30

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Solution

The fourth proportional to 413,601.30, 620,985.15 and 256,137.30 is: 384,567.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,601.30 : 620,985.15 = 256,137.30 : x
  2. Step 2: Convert to fraction form
    413,601.30/620,985.15 = 256,137.30/x
  3. Step 3: Cross multiply
    413,601.30x = 620,985.15 × 256,137.30
  4. Step 4: Simplify right side
    413,601.30x = 159,057,459,661.10
  5. Step 5: Solve for x
    x = 159,057,459,661.10/413,601.30
  6. Step 6: Final answer
    x = 384,567.12

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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.