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Finding the Fourth Proportional to 458,809.71, 688,360.82 and 192,498.72

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Solution

The fourth proportional to 458,809.71, 688,360.82 and 192,498.72 is: 288,809.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,809.71 : 688,360.82 = 192,498.72 : x
  2. Step 2: Convert to fraction form
    458,809.71/688,360.82 = 192,498.72/x
  3. Step 3: Cross multiply
    458,809.71x = 688,360.82 × 192,498.72
  4. Step 4: Simplify right side
    458,809.71x = 132,508,576,748.15
  5. Step 5: Solve for x
    x = 132,508,576,748.15/458,809.71
  6. Step 6: Final answer
    x = 288,809.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.