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Finding the Fourth Proportional to 449,547.35, 620,387.49 and 268,364.40

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Solution

The fourth proportional to 449,547.35, 620,387.49 and 268,364.40 is: 370,350.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,547.35 : 620,387.49 = 268,364.40 : x
  2. Step 2: Convert to fraction form
    449,547.35/620,387.49 = 268,364.40/x
  3. Step 3: Cross multiply
    449,547.35x = 620,387.49 × 268,364.40
  4. Step 4: Simplify right side
    449,547.35x = 166,489,916,521.36
  5. Step 5: Solve for x
    x = 166,489,916,521.36/449,547.35
  6. Step 6: Final answer
    x = 370,350.13

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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.