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Finding the Fourth Proportional to 315,130.80, 472,696.20 and 302,883.60

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Solution

The fourth proportional to 315,130.80, 472,696.20 and 302,883.60 is: 454,325.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,130.80 : 472,696.20 = 302,883.60 : x
  2. Step 2: Convert to fraction form
    315,130.80/472,696.20 = 302,883.60/x
  3. Step 3: Cross multiply
    315,130.80x = 472,696.20 × 302,883.60
  4. Step 4: Simplify right side
    315,130.80x = 143,171,926,762.32
  5. Step 5: Solve for x
    x = 143,171,926,762.32/315,130.80
  6. Step 6: Final answer
    x = 454,325.40

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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.