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Finding the Fourth Proportional to 529,712.80, 794,277.60 and 213,812.80

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Solution

The fourth proportional to 529,712.80, 794,277.60 and 213,812.80 is: 320,601.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,712.80 : 794,277.60 = 213,812.80 : x
  2. Step 2: Convert to fraction form
    529,712.80/794,277.60 = 213,812.80/x
  3. Step 3: Cross multiply
    529,712.80x = 794,277.60 × 213,812.80
  4. Step 4: Simplify right side
    529,712.80x = 169,826,717,633.28
  5. Step 5: Solve for x
    x = 169,826,717,633.28/529,712.80
  6. Step 6: Final answer
    x = 320,601.50

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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.