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Finding the Fourth Proportional to 340,145.60, 510,412.80 and 129,934.40

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Solution

The fourth proportional to 340,145.60, 510,412.80 and 129,934.40 is: 194,975.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,145.60 : 510,412.80 = 129,934.40 : x
  2. Step 2: Convert to fraction form
    340,145.60/510,412.80 = 129,934.40/x
  3. Step 3: Cross multiply
    340,145.60x = 510,412.80 × 129,934.40
  4. Step 4: Simplify right side
    340,145.60x = 66,320,180,920.32
  5. Step 5: Solve for x
    x = 66,320,180,920.32/340,145.60
  6. Step 6: Final answer
    x = 194,975.86

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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.