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Finding the Fourth Proportional to 550,872.19, 760,217.22 and 309,173.18

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Solution

The fourth proportional to 550,872.19, 760,217.22 and 309,173.18 is: 426,666.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,872.19 : 760,217.22 = 309,173.18 : x
  2. Step 2: Convert to fraction form
    550,872.19/760,217.22 = 309,173.18/x
  3. Step 3: Cross multiply
    550,872.19x = 760,217.22 × 309,173.18
  4. Step 4: Simplify right side
    550,872.19x = 235,038,773,852.29
  5. Step 5: Solve for x
    x = 235,038,773,852.29/550,872.19
  6. Step 6: Final answer
    x = 426,666.62

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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.