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Finding the Fourth Proportional to 487,672.67, 672,989.27 and 272,816.32

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Solution

The fourth proportional to 487,672.67, 672,989.27 and 272,816.32 is: 376,487.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,672.67 : 672,989.27 = 272,816.32 : x
  2. Step 2: Convert to fraction form
    487,672.67/672,989.27 = 272,816.32/x
  3. Step 3: Cross multiply
    487,672.67x = 672,989.27 × 272,816.32
  4. Step 4: Simplify right side
    487,672.67x = 183,602,457,723.36
  5. Step 5: Solve for x
    x = 183,602,457,723.36/487,672.67
  6. Step 6: Final answer
    x = 376,487.08

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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.