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Finding the Fourth Proportional to 347,614.20, 521,421.30 and 247,230.90

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Solution

The fourth proportional to 347,614.20, 521,421.30 and 247,230.90 is: 370,846.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,614.20 : 521,421.30 = 247,230.90 : x
  2. Step 2: Convert to fraction form
    347,614.20/521,421.30 = 247,230.90/x
  3. Step 3: Cross multiply
    347,614.20x = 521,421.30 × 247,230.90
  4. Step 4: Simplify right side
    347,614.20x = 128,911,457,278.17
  5. Step 5: Solve for x
    x = 128,911,457,278.17/347,614.20
  6. Step 6: Final answer
    x = 370,846.35

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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.