Home / 385,270.68-531,723.90-215,539.80

Finding the Fourth Proportional to 385,270.68, 531,723.90 and 215,539.80

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Solution

The fourth proportional to 385,270.68, 531,723.90 and 215,539.80 is: 297,473.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,270.68 : 531,723.90 = 215,539.80 : x
  2. Step 2: Convert to fraction form
    385,270.68/531,723.90 = 215,539.80/x
  3. Step 3: Cross multiply
    385,270.68x = 531,723.90 × 215,539.80
  4. Step 4: Simplify right side
    385,270.68x = 114,607,663,061.22
  5. Step 5: Solve for x
    x = 114,607,663,061.22/385,270.68
  6. Step 6: Final answer
    x = 297,473.10

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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.