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Finding the Fourth Proportional to 503,931, 755,896.50 and 208,443

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Solution

The fourth proportional to 503,931, 755,896.50 and 208,443 is: 312,664.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,931 : 755,896.50 = 208,443 : x
  2. Step 2: Convert to fraction form
    503,931/755,896.50 = 208,443/x
  3. Step 3: Cross multiply
    503,931x = 755,896.50 × 208,443
  4. Step 4: Simplify right side
    503,931x = 157,561,334,149.50
  5. Step 5: Solve for x
    x = 157,561,334,149.50/503,931
  6. Step 6: Final answer
    x = 312,664.50

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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.