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Finding the Fourth Proportional to 874,854.80, 1,312,282.06 and 210,006.80

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Solution

The fourth proportional to 874,854.80, 1,312,282.06 and 210,006.80 is: 315,010.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,854.80 : 1,312,282.06 = 210,006.80 : x
  2. Step 2: Convert to fraction form
    874,854.80/1,312,282.06 = 210,006.80/x
  3. Step 3: Cross multiply
    874,854.80x = 1,312,282.06 × 210,006.80
  4. Step 4: Simplify right side
    874,854.80x = 275,588,156,118.01
  5. Step 5: Solve for x
    x = 275,588,156,118.01/874,854.80
  6. Step 6: Final answer
    x = 315,010.17

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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.