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Finding the Fourth Proportional to 342,237.60, 512,578.80 and 216,266.40

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Solution

The fourth proportional to 342,237.60, 512,578.80 and 216,266.40 is: 323,908.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,237.60 : 512,578.80 = 216,266.40 : x
  2. Step 2: Convert to fraction form
    342,237.60/512,578.80 = 216,266.40/x
  3. Step 3: Cross multiply
    342,237.60x = 512,578.80 × 216,266.40
  4. Step 4: Simplify right side
    342,237.60x = 110,853,571,792.32
  5. Step 5: Solve for x
    x = 110,853,571,792.32/342,237.60
  6. Step 6: Final answer
    x = 323,908.22

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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.