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Finding the Fourth Proportional to 550,873.19, 760,218.60 and 309,174.18

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Solution

The fourth proportional to 550,873.19, 760,218.60 and 309,174.18 is: 426,668.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,873.19 : 760,218.60 = 309,174.18 : x
  2. Step 2: Convert to fraction form
    550,873.19/760,218.60 = 309,174.18/x
  3. Step 3: Cross multiply
    550,873.19x = 760,218.60 × 309,174.18
  4. Step 4: Simplify right side
    550,873.19x = 235,039,962,275.75
  5. Step 5: Solve for x
    x = 235,039,962,275.75/550,873.19
  6. Step 6: Final answer
    x = 426,668.00

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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.