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Finding the Fourth Proportional to 290,368.80, 400,696.56 and 169,516.80

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Solution

The fourth proportional to 290,368.80, 400,696.56 and 169,516.80 is: 233,925.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,368.80 : 400,696.56 = 169,516.80 : x
  2. Step 2: Convert to fraction form
    290,368.80/400,696.56 = 169,516.80/x
  3. Step 3: Cross multiply
    290,368.80x = 400,696.56 × 169,516.80
  4. Step 4: Simplify right side
    290,368.80x = 67,924,798,622.21
  5. Step 5: Solve for x
    x = 67,924,798,622.21/290,368.80
  6. Step 6: Final answer
    x = 233,925.95

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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.