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Finding the Fourth Proportional to 356,876.60, 535,314.90 and 272,895.80

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Solution

The fourth proportional to 356,876.60, 535,314.90 and 272,895.80 is: 409,343.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,876.60 : 535,314.90 = 272,895.80 : x
  2. Step 2: Convert to fraction form
    356,876.60/535,314.90 = 272,895.80/x
  3. Step 3: Cross multiply
    356,876.60x = 535,314.90 × 272,895.80
  4. Step 4: Simplify right side
    356,876.60x = 146,085,187,887.42
  5. Step 5: Solve for x
    x = 146,085,187,887.42/356,876.60
  6. Step 6: Final answer
    x = 409,343.70

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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.