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Finding the Fourth Proportional to 402,505.29, 555,235.43 and 326,922.57

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Solution

The fourth proportional to 402,505.29, 555,235.43 and 326,922.57 is: 450,972.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,505.29 : 555,235.43 = 326,922.57 : x
  2. Step 2: Convert to fraction form
    402,505.29/555,235.43 = 326,922.57/x
  3. Step 3: Cross multiply
    402,505.29x = 555,235.43 × 326,922.57
  4. Step 4: Simplify right side
    402,505.29x = 181,518,992,096.04
  5. Step 5: Solve for x
    x = 181,518,992,096.04/402,505.29
  6. Step 6: Final answer
    x = 450,972.94

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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.