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Finding the Fourth Proportional to 572,005.40, 857,671.68 and 217,044.36

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Solution

The fourth proportional to 572,005.40, 857,671.68 and 217,044.36 is: 325,438.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,005.40 : 857,671.68 = 217,044.36 : x
  2. Step 2: Convert to fraction form
    572,005.40/857,671.68 = 217,044.36/x
  3. Step 3: Cross multiply
    572,005.40x = 857,671.68 × 217,044.36
  4. Step 4: Simplify right side
    572,005.40x = 186,152,800,875.73
  5. Step 5: Solve for x
    x = 186,152,800,875.73/572,005.40
  6. Step 6: Final answer
    x = 325,438.89

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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.