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Finding the Fourth Proportional to 315,066.30, 472,599.45 and 115,320.30

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Solution

The fourth proportional to 315,066.30, 472,599.45 and 115,320.30 is: 172,980.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,066.30 : 472,599.45 = 115,320.30 : x
  2. Step 2: Convert to fraction form
    315,066.30/472,599.45 = 115,320.30/x
  3. Step 3: Cross multiply
    315,066.30x = 472,599.45 × 115,320.30
  4. Step 4: Simplify right side
    315,066.30x = 54,500,310,353.84
  5. Step 5: Solve for x
    x = 54,500,310,353.84/315,066.30
  6. Step 6: Final answer
    x = 172,980.45

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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.