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Finding the Fourth Proportional to 348,060.60, 521,399.70 and 207,401.40

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Solution

The fourth proportional to 348,060.60, 521,399.70 and 207,401.40 is: 310,690.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,060.60 : 521,399.70 = 207,401.40 : x
  2. Step 2: Convert to fraction form
    348,060.60/521,399.70 = 207,401.40/x
  3. Step 3: Cross multiply
    348,060.60x = 521,399.70 × 207,401.40
  4. Step 4: Simplify right side
    348,060.60x = 108,139,027,739.58
  5. Step 5: Solve for x
    x = 108,139,027,739.58/348,060.60
  6. Step 6: Final answer
    x = 310,690.23

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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.