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Finding the Fourth Proportional to 286,533.60, 395,418.12 and 157,470.72

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Solution

The fourth proportional to 286,533.60, 395,418.12 and 157,470.72 is: 217,310.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,533.60 : 395,418.12 = 157,470.72 : x
  2. Step 2: Convert to fraction form
    286,533.60/395,418.12 = 157,470.72/x
  3. Step 3: Cross multiply
    286,533.60x = 395,418.12 × 157,470.72
  4. Step 4: Simplify right side
    286,533.60x = 62,266,776,057.45
  5. Step 5: Solve for x
    x = 62,266,776,057.45/286,533.60
  6. Step 6: Final answer
    x = 217,310.56

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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.