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Finding the Fourth Proportional to 450,486, 621,690.12 and 249,282

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Solution

The fourth proportional to 450,486, 621,690.12 and 249,282 is: 344,019.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,486 : 621,690.12 = 249,282 : x
  2. Step 2: Convert to fraction form
    450,486/621,690.12 = 249,282/x
  3. Step 3: Cross multiply
    450,486x = 621,690.12 × 249,282
  4. Step 4: Simplify right side
    450,486x = 154,976,156,493.84
  5. Step 5: Solve for x
    x = 154,976,156,493.84/450,486
  6. Step 6: Final answer
    x = 344,019.92

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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.