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Finding the Fourth Proportional to 292,421.60, 438,632.40 and 192,694.40

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Solution

The fourth proportional to 292,421.60, 438,632.40 and 192,694.40 is: 289,041.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,421.60 : 438,632.40 = 192,694.40 : x
  2. Step 2: Convert to fraction form
    292,421.60/438,632.40 = 192,694.40/x
  3. Step 3: Cross multiply
    292,421.60x = 438,632.40 × 192,694.40
  4. Step 4: Simplify right side
    292,421.60x = 84,522,007,138.56
  5. Step 5: Solve for x
    x = 84,522,007,138.56/292,421.60
  6. Step 6: Final answer
    x = 289,041.60

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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.