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Finding the Fourth Proportional to 530,086.16, 731,511.24 and 288,370.82

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Solution

The fourth proportional to 530,086.16, 731,511.24 and 288,370.82 is: 397,947.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,086.16 : 731,511.24 = 288,370.82 : x
  2. Step 2: Convert to fraction form
    530,086.16/731,511.24 = 288,370.82/x
  3. Step 3: Cross multiply
    530,086.16x = 731,511.24 × 288,370.82
  4. Step 4: Simplify right side
    530,086.16x = 210,946,496,118.02
  5. Step 5: Solve for x
    x = 210,946,496,118.02/530,086.16
  6. Step 6: Final answer
    x = 397,947.56

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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.