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Finding the Fourth Proportional to 282,853.86, 390,344.94 and 153,799.68

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Solution

The fourth proportional to 282,853.86, 390,344.94 and 153,799.68 is: 212,247.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,853.86 : 390,344.94 = 153,799.68 : x
  2. Step 2: Convert to fraction form
    282,853.86/390,344.94 = 153,799.68/x
  3. Step 3: Cross multiply
    282,853.86x = 390,344.94 × 153,799.68
  4. Step 4: Simplify right side
    282,853.86x = 60,034,926,861.62
  5. Step 5: Solve for x
    x = 60,034,926,861.62/282,853.86
  6. Step 6: Final answer
    x = 212,247.15

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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.