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Finding the Fourth Proportional to 290,470.53, 400,886.91 and 163,146.12

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Solution

The fourth proportional to 290,470.53, 400,886.91 and 163,146.12 is: 225,162.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,470.53 : 400,886.91 = 163,146.12 : x
  2. Step 2: Convert to fraction form
    290,470.53/400,886.91 = 163,146.12/x
  3. Step 3: Cross multiply
    290,470.53x = 400,886.91 × 163,146.12
  4. Step 4: Simplify right side
    290,470.53x = 65,403,143,925.29
  5. Step 5: Solve for x
    x = 65,403,143,925.29/290,470.53
  6. Step 6: Final answer
    x = 225,162.75

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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.