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Finding the Fourth Proportional to 438,700.80, 657,067.05 and 359,968.80

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Solution

The fourth proportional to 438,700.80, 657,067.05 and 359,968.80 is: 539,145.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,700.80 : 657,067.05 = 359,968.80 : x
  2. Step 2: Convert to fraction form
    438,700.80/657,067.05 = 359,968.80/x
  3. Step 3: Cross multiply
    438,700.80x = 657,067.05 × 359,968.80
  4. Step 4: Simplify right side
    438,700.80x = 236,523,637,508.04
  5. Step 5: Solve for x
    x = 236,523,637,508.04/438,700.80
  6. Step 6: Final answer
    x = 539,145.67

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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.