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Finding the Fourth Proportional to 289,452.48, 399,456.72 and 168,574.32

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Solution

The fourth proportional to 289,452.48, 399,456.72 and 168,574.32 is: 232,639.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,452.48 : 399,456.72 = 168,574.32 : x
  2. Step 2: Convert to fraction form
    289,452.48/399,456.72 = 168,574.32/x
  3. Step 3: Cross multiply
    289,452.48x = 399,456.72 × 168,574.32
  4. Step 4: Simplify right side
    289,452.48x = 67,338,144,943.43
  5. Step 5: Solve for x
    x = 67,338,144,943.43/289,452.48
  6. Step 6: Final answer
    x = 232,639.72

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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.