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Finding the Fourth Proportional to 550,021.32, 759,064.48 and 308,303.96

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Solution

The fourth proportional to 550,021.32, 759,064.48 and 308,303.96 is: 425,479.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,021.32 : 759,064.48 = 308,303.96 : x
  2. Step 2: Convert to fraction form
    550,021.32/759,064.48 = 308,303.96/x
  3. Step 3: Cross multiply
    550,021.32x = 759,064.48 × 308,303.96
  4. Step 4: Simplify right side
    550,021.32x = 234,022,580,513.26
  5. Step 5: Solve for x
    x = 234,022,580,513.26/550,021.32
  6. Step 6: Final answer
    x = 425,479.11

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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.