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Finding the Fourth Proportional to 343,289.60, 514,934.40 and 231,315.20

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Solution

The fourth proportional to 343,289.60, 514,934.40 and 231,315.20 is: 346,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,289.60 : 514,934.40 = 231,315.20 : x
  2. Step 2: Convert to fraction form
    343,289.60/514,934.40 = 231,315.20/x
  3. Step 3: Cross multiply
    343,289.60x = 514,934.40 × 231,315.20
  4. Step 4: Simplify right side
    343,289.60x = 119,112,153,722.88
  5. Step 5: Solve for x
    x = 119,112,153,722.88/343,289.60
  6. Step 6: Final answer
    x = 346,972.80

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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.