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Finding the Fourth Proportional to 493,451.30, 740,004.15 and 256,715.30

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Solution

The fourth proportional to 493,451.30, 740,004.15 and 256,715.30 is: 384,983.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,451.30 : 740,004.15 = 256,715.30 : x
  2. Step 2: Convert to fraction form
    493,451.30/740,004.15 = 256,715.30/x
  3. Step 3: Cross multiply
    493,451.30x = 740,004.15 × 256,715.30
  4. Step 4: Simplify right side
    493,451.30x = 189,970,387,368.50
  5. Step 5: Solve for x
    x = 189,970,387,368.50/493,451.30
  6. Step 6: Final answer
    x = 384,983.05

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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.