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Finding the Fourth Proportional to 422,657.48, 583,264.68 and 231,678.92

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Solution

The fourth proportional to 422,657.48, 583,264.68 and 231,678.92 is: 319,715.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,657.48 : 583,264.68 = 231,678.92 : x
  2. Step 2: Convert to fraction form
    422,657.48/583,264.68 = 231,678.92/x
  3. Step 3: Cross multiply
    422,657.48x = 583,264.68 × 231,678.92
  4. Step 4: Simplify right side
    422,657.48x = 135,130,131,136.55
  5. Step 5: Solve for x
    x = 135,130,131,136.55/422,657.48
  6. Step 6: Final answer
    x = 319,715.46

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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.