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Finding the Fourth Proportional to 283,035.94, 390,589.59 and 155,708.80

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Solution

The fourth proportional to 283,035.94, 390,589.59 and 155,708.80 is: 214,878.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,035.94 : 390,589.59 = 155,708.80 : x
  2. Step 2: Convert to fraction form
    283,035.94/390,589.59 = 155,708.80/x
  3. Step 3: Cross multiply
    283,035.94x = 390,589.59 × 155,708.80
  4. Step 4: Simplify right side
    283,035.94x = 60,818,235,958.83
  5. Step 5: Solve for x
    x = 60,818,235,958.83/283,035.94
  6. Step 6: Final answer
    x = 214,878.14

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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.