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Finding the Fourth Proportional to 385,543.80, 578,315.70 and 273,350.70

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Solution

The fourth proportional to 385,543.80, 578,315.70 and 273,350.70 is: 410,026.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,543.80 : 578,315.70 = 273,350.70 : x
  2. Step 2: Convert to fraction form
    385,543.80/578,315.70 = 273,350.70/x
  3. Step 3: Cross multiply
    385,543.80x = 578,315.70 × 273,350.70
  4. Step 4: Simplify right side
    385,543.80x = 158,083,001,415.99
  5. Step 5: Solve for x
    x = 158,083,001,415.99/385,543.80
  6. Step 6: Final answer
    x = 410,026.05

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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.