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Finding the Fourth Proportional to 199,455.40, 299,328.90 and 140,406.40

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Solution

The fourth proportional to 199,455.40, 299,328.90 and 140,406.40 is: 210,712.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,455.40 : 299,328.90 = 140,406.40 : x
  2. Step 2: Convert to fraction form
    199,455.40/299,328.90 = 140,406.40/x
  3. Step 3: Cross multiply
    199,455.40x = 299,328.90 × 140,406.40
  4. Step 4: Simplify right side
    199,455.40x = 42,027,693,264.96
  5. Step 5: Solve for x
    x = 42,027,693,264.96/199,455.40
  6. Step 6: Final answer
    x = 210,712.24

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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.