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Finding the Fourth Proportional to 286,484.10, 392,291.72 and 275,190.90

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Solution

The fourth proportional to 286,484.10, 392,291.72 and 275,190.90 is: 376,827.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,484.10 : 392,291.72 = 275,190.90 : x
  2. Step 2: Convert to fraction form
    286,484.10/392,291.72 = 275,190.90/x
  3. Step 3: Cross multiply
    286,484.10x = 392,291.72 × 275,190.90
  4. Step 4: Simplify right side
    286,484.10x = 107,955,110,113.39
  5. Step 5: Solve for x
    x = 107,955,110,113.39/286,484.10
  6. Step 6: Final answer
    x = 376,827.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.