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Finding the Fourth Proportional to 643,166.62, 887,547.58 and 356,713.36

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Solution

The fourth proportional to 643,166.62, 887,547.58 and 356,713.36 is: 492,252.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,166.62 : 887,547.58 = 356,713.36 : x
  2. Step 2: Convert to fraction form
    643,166.62/887,547.58 = 356,713.36/x
  3. Step 3: Cross multiply
    643,166.62x = 887,547.58 × 356,713.36
  4. Step 4: Simplify right side
    643,166.62x = 316,600,079,421.67
  5. Step 5: Solve for x
    x = 316,600,079,421.67/643,166.62
  6. Step 6: Final answer
    x = 492,252.04

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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.