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Finding the Fourth Proportional to 487,653.12, 673,017.12 and 272,847.60

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Solution

The fourth proportional to 487,653.12, 673,017.12 and 272,847.60 is: 376,560.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,653.12 : 673,017.12 = 272,847.60 : x
  2. Step 2: Convert to fraction form
    487,653.12/673,017.12 = 272,847.60/x
  3. Step 3: Cross multiply
    487,653.12x = 673,017.12 × 272,847.60
  4. Step 4: Simplify right side
    487,653.12x = 183,631,105,950.91
  5. Step 5: Solve for x
    x = 183,631,105,950.91/487,653.12
  6. Step 6: Final answer
    x = 376,560.92

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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.