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Finding the Fourth Proportional to 523,205.68, 722,041.68 and 308,529.76

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Solution

The fourth proportional to 523,205.68, 722,041.68 and 308,529.76 is: 425,781.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,205.68 : 722,041.68 = 308,529.76 : x
  2. Step 2: Convert to fraction form
    523,205.68/722,041.68 = 308,529.76/x
  3. Step 3: Cross multiply
    523,205.68x = 722,041.68 × 308,529.76
  4. Step 4: Simplify right side
    523,205.68x = 222,771,346,240.40
  5. Step 5: Solve for x
    x = 222,771,346,240.40/523,205.68
  6. Step 6: Final answer
    x = 425,781.59

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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.