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Finding the Fourth Proportional to 290,958.52, 401,490.12 and 163,631.40

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Solution

The fourth proportional to 290,958.52, 401,490.12 and 163,631.40 is: 225,792.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,958.52 : 401,490.12 = 163,631.40 : x
  2. Step 2: Convert to fraction form
    290,958.52/401,490.12 = 163,631.40/x
  3. Step 3: Cross multiply
    290,958.52x = 401,490.12 × 163,631.40
  4. Step 4: Simplify right side
    290,958.52x = 65,696,390,421.77
  5. Step 5: Solve for x
    x = 65,696,390,421.77/290,958.52
  6. Step 6: Final answer
    x = 225,792.98

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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.