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Finding the Fourth Proportional to 468,422.21, 646,423.04 and 253,561.61

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Solution

The fourth proportional to 468,422.21, 646,423.04 and 253,561.61 is: 349,915.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,422.21 : 646,423.04 = 253,561.61 : x
  2. Step 2: Convert to fraction form
    468,422.21/646,423.04 = 253,561.61/x
  3. Step 3: Cross multiply
    468,422.21x = 646,423.04 × 253,561.61
  4. Step 4: Simplify right side
    468,422.21x = 163,908,066,763.49
  5. Step 5: Solve for x
    x = 163,908,066,763.49/468,422.21
  6. Step 6: Final answer
    x = 349,915.23

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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.