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Finding the Fourth Proportional to 493,217.36, 680,638.92 and 266,862.80

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Solution

The fourth proportional to 493,217.36, 680,638.92 and 266,862.80 is: 368,270.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,217.36 : 680,638.92 = 266,862.80 : x
  2. Step 2: Convert to fraction form
    493,217.36/680,638.92 = 266,862.80/x
  3. Step 3: Cross multiply
    493,217.36x = 680,638.92 × 266,862.80
  4. Step 4: Simplify right side
    493,217.36x = 181,637,207,980.18
  5. Step 5: Solve for x
    x = 181,637,207,980.18/493,217.36
  6. Step 6: Final answer
    x = 368,270.10

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1.5x scale

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.