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Finding the Fourth Proportional to 613,464.80, 920,132.40 and 192,718.40

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Solution

The fourth proportional to 613,464.80, 920,132.40 and 192,718.40 is: 289,057.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,464.80 : 920,132.40 = 192,718.40 : x
  2. Step 2: Convert to fraction form
    613,464.80/920,132.40 = 192,718.40/x
  3. Step 3: Cross multiply
    613,464.80x = 920,132.40 × 192,718.40
  4. Step 4: Simplify right side
    613,464.80x = 177,326,443,916.16
  5. Step 5: Solve for x
    x = 177,326,443,916.16/613,464.80
  6. Step 6: Final answer
    x = 289,057.24

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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.