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Finding the Fourth Proportional to 420,017.33, 579,668.32 and 256,769.41

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Solution

The fourth proportional to 420,017.33, 579,668.32 and 256,769.41 is: 354,368.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,017.33 : 579,668.32 = 256,769.41 : x
  2. Step 2: Convert to fraction form
    420,017.33/579,668.32 = 256,769.41/x
  3. Step 3: Cross multiply
    420,017.33x = 579,668.32 × 256,769.41
  4. Step 4: Simplify right side
    420,017.33x = 148,841,092,522.09
  5. Step 5: Solve for x
    x = 148,841,092,522.09/420,017.33
  6. Step 6: Final answer
    x = 354,368.93

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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.