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Finding the Fourth Proportional to 530,335.05, 731,941.21 and 312,474.21

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Solution

The fourth proportional to 530,335.05, 731,941.21 and 312,474.21 is: 431,260.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,335.05 : 731,941.21 = 312,474.21 : x
  2. Step 2: Convert to fraction form
    530,335.05/731,941.21 = 312,474.21/x
  3. Step 3: Cross multiply
    530,335.05x = 731,941.21 × 312,474.21
  4. Step 4: Simplify right side
    530,335.05x = 228,712,749,007.01
  5. Step 5: Solve for x
    x = 228,712,749,007.01/530,335.05
  6. Step 6: Final answer
    x = 431,260.86

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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.