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Finding the Fourth Proportional to 302,475.15, 453,712.73 and 287,712.90

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Solution

The fourth proportional to 302,475.15, 453,712.73 and 287,712.90 is: 431,569.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,475.15 : 453,712.73 = 287,712.90 : x
  2. Step 2: Convert to fraction form
    302,475.15/453,712.73 = 287,712.90/x
  3. Step 3: Cross multiply
    302,475.15x = 453,712.73 × 287,712.90
  4. Step 4: Simplify right side
    302,475.15x = 130,539,003,876.65
  5. Step 5: Solve for x
    x = 130,539,003,876.65/302,475.15
  6. Step 6: Final answer
    x = 431,569.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.