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Finding the Fourth Proportional to 286,344.56, 395,155.80 and 159,020.40

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Solution

The fourth proportional to 286,344.56, 395,155.80 and 159,020.40 is: 219,448.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,344.56 : 395,155.80 = 159,020.40 : x
  2. Step 2: Convert to fraction form
    286,344.56/395,155.80 = 159,020.40/x
  3. Step 3: Cross multiply
    286,344.56x = 395,155.80 × 159,020.40
  4. Step 4: Simplify right side
    286,344.56x = 62,837,833,378.32
  5. Step 5: Solve for x
    x = 62,837,833,378.32/286,344.56
  6. Step 6: Final answer
    x = 219,448.32

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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.