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Finding the Fourth Proportional to 282,695.64, 390,125 and 155,370.92

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Solution

The fourth proportional to 282,695.64, 390,125 and 155,370.92 is: 214,414.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,695.64 : 390,125 = 155,370.92 : x
  2. Step 2: Convert to fraction form
    282,695.64/390,125 = 155,370.92/x
  3. Step 3: Cross multiply
    282,695.64x = 390,125 × 155,370.92
  4. Step 4: Simplify right side
    282,695.64x = 60,614,080,165.00
  5. Step 5: Solve for x
    x = 60,614,080,165.00/282,695.64
  6. Step 6: Final answer
    x = 214,414.63

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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.