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Finding the Fourth Proportional to 290,283.98, 400,521.78 and 169,356.24

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Solution

The fourth proportional to 290,283.98, 400,521.78 and 169,356.24 is: 233,670.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,283.98 : 400,521.78 = 169,356.24 : x
  2. Step 2: Convert to fraction form
    290,283.98/400,521.78 = 169,356.24/x
  3. Step 3: Cross multiply
    290,283.98x = 400,521.78 × 169,356.24
  4. Step 4: Simplify right side
    290,283.98x = 67,830,862,698.91
  5. Step 5: Solve for x
    x = 67,830,862,698.91/290,283.98
  6. Step 6: Final answer
    x = 233,670.71

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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.