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Finding the Fourth Proportional to 330,488.70, 456,073.20 and 187,276.11

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Solution

The fourth proportional to 330,488.70, 456,073.20 and 187,276.11 is: 258,440.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,488.70 : 456,073.20 = 187,276.11 : x
  2. Step 2: Convert to fraction form
    330,488.70/456,073.20 = 187,276.11/x
  3. Step 3: Cross multiply
    330,488.70x = 456,073.20 × 187,276.11
  4. Step 4: Simplify right side
    330,488.70x = 85,411,614,771.25
  5. Step 5: Solve for x
    x = 85,411,614,771.25/330,488.70
  6. Step 6: Final answer
    x = 258,440.35

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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.