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Finding the Fourth Proportional to 347,813.40, 521,720.10 and 326,818.20

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Solution

The fourth proportional to 347,813.40, 521,720.10 and 326,818.20 is: 490,227.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,813.40 : 521,720.10 = 326,818.20 : x
  2. Step 2: Convert to fraction form
    347,813.40/521,720.10 = 326,818.20/x
  3. Step 3: Cross multiply
    347,813.40x = 521,720.10 × 326,818.20
  4. Step 4: Simplify right side
    347,813.40x = 170,507,623,985.82
  5. Step 5: Solve for x
    x = 170,507,623,985.82/347,813.40
  6. Step 6: Final answer
    x = 490,227.30

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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.