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Finding the Fourth Proportional to 468,221.20, 646,143.96 and 253,364.92

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Solution

The fourth proportional to 468,221.20, 646,143.96 and 253,364.92 is: 349,642.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,221.20 : 646,143.96 = 253,364.92 : x
  2. Step 2: Convert to fraction form
    468,221.20/646,143.96 = 253,364.92/x
  3. Step 3: Cross multiply
    468,221.20x = 646,143.96 × 253,364.92
  4. Step 4: Simplify right side
    468,221.20x = 163,710,212,733.88
  5. Step 5: Solve for x
    x = 163,710,212,733.88/468,221.20
  6. Step 6: Final answer
    x = 349,642.89

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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.