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Finding the Fourth Proportional to 372,143.90, 521,701.30 and 372,143.90

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Solution

The fourth proportional to 372,143.90, 521,701.30 and 372,143.90 is: 521,701.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,143.90 : 521,701.30 = 372,143.90 : x
  2. Step 2: Convert to fraction form
    372,143.90/521,701.30 = 372,143.90/x
  3. Step 3: Cross multiply
    372,143.90x = 521,701.30 × 372,143.90
  4. Step 4: Simplify right side
    372,143.90x = 194,147,956,417.07
  5. Step 5: Solve for x
    x = 194,147,956,417.07/372,143.90
  6. Step 6: Final answer
    x = 521,701.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.