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Finding the Fourth Proportional to 454,239.12, 626,177.88 and 290,878.32

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Solution

The fourth proportional to 454,239.12, 626,177.88 and 290,878.32 is: 400,981.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,239.12 : 626,177.88 = 290,878.32 : x
  2. Step 2: Convert to fraction form
    454,239.12/626,177.88 = 290,878.32/x
  3. Step 3: Cross multiply
    454,239.12x = 626,177.88 × 290,878.32
  4. Step 4: Simplify right side
    454,239.12x = 182,141,569,755.56
  5. Step 5: Solve for x
    x = 182,141,569,755.56/454,239.12
  6. Step 6: Final answer
    x = 400,981.69

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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.