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Finding the Fourth Proportional to 289,813.52, 432,609.20 and 268,444.16

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Solution

The fourth proportional to 289,813.52, 432,609.20 and 268,444.16 is: 400,710.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,813.52 : 432,609.20 = 268,444.16 : x
  2. Step 2: Convert to fraction form
    289,813.52/432,609.20 = 268,444.16/x
  3. Step 3: Cross multiply
    289,813.52x = 432,609.20 × 268,444.16
  4. Step 4: Simplify right side
    289,813.52x = 116,131,413,302.27
  5. Step 5: Solve for x
    x = 116,131,413,302.27/289,813.52
  6. Step 6: Final answer
    x = 400,710.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.