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Finding the Fourth Proportional to 508,840.20, 763,260.30 and 154,103.40

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Solution

The fourth proportional to 508,840.20, 763,260.30 and 154,103.40 is: 231,155.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,840.20 : 763,260.30 = 154,103.40 : x
  2. Step 2: Convert to fraction form
    508,840.20/763,260.30 = 154,103.40/x
  3. Step 3: Cross multiply
    508,840.20x = 763,260.30 × 154,103.40
  4. Step 4: Simplify right side
    508,840.20x = 117,621,007,315.02
  5. Step 5: Solve for x
    x = 117,621,007,315.02/508,840.20
  6. Step 6: Final answer
    x = 231,155.10

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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.