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Finding the Fourth Proportional to 457,026.66, 630,621.69 and 287,140.50

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Solution

The fourth proportional to 457,026.66, 630,621.69 and 287,140.50 is: 396,206.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,026.66 : 630,621.69 = 287,140.50 : x
  2. Step 2: Convert to fraction form
    457,026.66/630,621.69 = 287,140.50/x
  3. Step 3: Cross multiply
    457,026.66x = 630,621.69 × 287,140.50
  4. Step 4: Simplify right side
    457,026.66x = 181,077,027,377.45
  5. Step 5: Solve for x
    x = 181,077,027,377.45/457,026.66
  6. Step 6: Final answer
    x = 396,206.71

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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.