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Finding the Fourth Proportional to 287,303.74, 431,336.52 and 245,452.76

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Solution

The fourth proportional to 287,303.74, 431,336.52 and 245,452.76 is: 368,504.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,303.74 : 431,336.52 = 245,452.76 : x
  2. Step 2: Convert to fraction form
    287,303.74/431,336.52 = 245,452.76/x
  3. Step 3: Cross multiply
    287,303.74x = 431,336.52 × 245,452.76
  4. Step 4: Simplify right side
    287,303.74x = 105,872,737,166.11
  5. Step 5: Solve for x
    x = 105,872,737,166.11/287,303.74
  6. Step 6: Final answer
    x = 368,504.56

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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.