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Finding the Fourth Proportional to 315,132.80, 472,699.20 and 302,885.60

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Solution

The fourth proportional to 315,132.80, 472,699.20 and 302,885.60 is: 454,328.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,132.80 : 472,699.20 = 302,885.60 : x
  2. Step 2: Convert to fraction form
    315,132.80/472,699.20 = 302,885.60/x
  3. Step 3: Cross multiply
    315,132.80x = 472,699.20 × 302,885.60
  4. Step 4: Simplify right side
    315,132.80x = 143,173,780,811.52
  5. Step 5: Solve for x
    x = 143,173,780,811.52/315,132.80
  6. Step 6: Final answer
    x = 454,328.40

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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.