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Finding the Fourth Proportional to 472,073.40, 651,468.72 and 257,213.40

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Solution

The fourth proportional to 472,073.40, 651,468.72 and 257,213.40 is: 354,958.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,073.40 : 651,468.72 = 257,213.40 : x
  2. Step 2: Convert to fraction form
    472,073.40/651,468.72 = 257,213.40/x
  3. Step 3: Cross multiply
    472,073.40x = 651,468.72 × 257,213.40
  4. Step 4: Simplify right side
    472,073.40x = 167,566,484,464.85
  5. Step 5: Solve for x
    x = 167,566,484,464.85/472,073.40
  6. Step 6: Final answer
    x = 354,958.54

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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.