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Finding the Fourth Proportional to 290,460.84, 400,837.55 and 163,136.45

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Solution

The fourth proportional to 290,460.84, 400,837.55 and 163,136.45 is: 225,129.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,460.84 : 400,837.55 = 163,136.45 : x
  2. Step 2: Convert to fraction form
    290,460.84/400,837.55 = 163,136.45/x
  3. Step 3: Cross multiply
    290,460.84x = 400,837.55 × 163,136.45
  4. Step 4: Simplify right side
    290,460.84x = 65,391,212,113.83
  5. Step 5: Solve for x
    x = 65,391,212,113.83/290,460.84
  6. Step 6: Final answer
    x = 225,129.18

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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.