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Finding the Fourth Proportional to 438,543.60, 657,305.10 and 201,910.20

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Solution

The fourth proportional to 438,543.60, 657,305.10 and 201,910.20 is: 302,630.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,543.60 : 657,305.10 = 201,910.20 : x
  2. Step 2: Convert to fraction form
    438,543.60/657,305.10 = 201,910.20/x
  3. Step 3: Cross multiply
    438,543.60x = 657,305.10 × 201,910.20
  4. Step 4: Simplify right side
    438,543.60x = 132,716,604,202.02
  5. Step 5: Solve for x
    x = 132,716,604,202.02/438,543.60
  6. Step 6: Final answer
    x = 302,630.35

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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.