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Finding the Fourth Proportional to 561,999.30, 775,570.35 and 307,366.86

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Solution

The fourth proportional to 561,999.30, 775,570.35 and 307,366.86 is: 424,172.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,999.30 : 775,570.35 = 307,366.86 : x
  2. Step 2: Convert to fraction form
    561,999.30/775,570.35 = 307,366.86/x
  3. Step 3: Cross multiply
    561,999.30x = 775,570.35 × 307,366.86
  4. Step 4: Simplify right side
    561,999.30x = 238,384,623,188.60
  5. Step 5: Solve for x
    x = 238,384,623,188.60/561,999.30
  6. Step 6: Final answer
    x = 424,172.46

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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.