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Finding the Fourth Proportional to 292,280.20, 438,420.30 and 243,072.70

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Solution

The fourth proportional to 292,280.20, 438,420.30 and 243,072.70 is: 364,609.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,280.20 : 438,420.30 = 243,072.70 : x
  2. Step 2: Convert to fraction form
    292,280.20/438,420.30 = 243,072.70/x
  3. Step 3: Cross multiply
    292,280.20x = 438,420.30 × 243,072.70
  4. Step 4: Simplify right side
    292,280.20x = 106,568,006,055.81
  5. Step 5: Solve for x
    x = 106,568,006,055.81/292,280.20
  6. Step 6: Final answer
    x = 364,609.05

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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.