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Finding the Fourth Proportional to 312,000.60, 468,000.90 and 245,645.40

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Solution

The fourth proportional to 312,000.60, 468,000.90 and 245,645.40 is: 368,468.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,000.60 : 468,000.90 = 245,645.40 : x
  2. Step 2: Convert to fraction form
    312,000.60/468,000.90 = 245,645.40/x
  3. Step 3: Cross multiply
    312,000.60x = 468,000.90 × 245,645.40
  4. Step 4: Simplify right side
    312,000.60x = 114,962,268,280.86
  5. Step 5: Solve for x
    x = 114,962,268,280.86/312,000.60
  6. Step 6: Final answer
    x = 368,468.10

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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.