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Finding the Fourth Proportional to 282,876.30, 390,364.92 and 155,551.59

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Solution

The fourth proportional to 282,876.30, 390,364.92 and 155,551.59 is: 214,658.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,876.30 : 390,364.92 = 155,551.59 : x
  2. Step 2: Convert to fraction form
    282,876.30/390,364.92 = 155,551.59/x
  3. Step 3: Cross multiply
    282,876.30x = 390,364.92 × 155,551.59
  4. Step 4: Simplify right side
    282,876.30x = 60,721,883,986.22
  5. Step 5: Solve for x
    x = 60,721,883,986.22/282,876.30
  6. Step 6: Final answer
    x = 214,658.79

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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.