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Finding the Fourth Proportional to 282,833.66, 390,311.91 and 155,517.45

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Solution

The fourth proportional to 282,833.66, 390,311.91 and 155,517.45 is: 214,614.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,833.66 : 390,311.91 = 155,517.45 : x
  2. Step 2: Convert to fraction form
    282,833.66/390,311.91 = 155,517.45/x
  3. Step 3: Cross multiply
    282,833.66x = 390,311.91 × 155,517.45
  4. Step 4: Simplify right side
    282,833.66x = 60,700,312,947.83
  5. Step 5: Solve for x
    x = 60,700,312,947.83/282,833.66
  6. Step 6: Final answer
    x = 214,614.89

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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.