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Finding the Fourth Proportional to 286,658.40, 395,588.52 and 159,334.20

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Solution

The fourth proportional to 286,658.40, 395,588.52 and 159,334.20 is: 219,881.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,658.40 : 395,588.52 = 159,334.20 : x
  2. Step 2: Convert to fraction form
    286,658.40/395,588.52 = 159,334.20/x
  3. Step 3: Cross multiply
    286,658.40x = 395,588.52 × 159,334.20
  4. Step 4: Simplify right side
    286,658.40x = 63,030,780,363.38
  5. Step 5: Solve for x
    x = 63,030,780,363.38/286,658.40
  6. Step 6: Final answer
    x = 219,881.16

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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.