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Finding the Fourth Proportional to 290,530.08, 400,931.74 and 163,205.76

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Solution

The fourth proportional to 290,530.08, 400,931.74 and 163,205.76 is: 225,224.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,530.08 : 400,931.74 = 163,205.76 : x
  2. Step 2: Convert to fraction form
    290,530.08/400,931.74 = 163,205.76/x
  3. Step 3: Cross multiply
    290,530.08x = 400,931.74 × 163,205.76
  4. Step 4: Simplify right side
    290,530.08x = 65,434,369,334.82
  5. Step 5: Solve for x
    x = 65,434,369,334.82/290,530.08
  6. Step 6: Final answer
    x = 225,224.08

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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.