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Finding the Fourth Proportional to 315,059.76, 472,451.40 and 115,328.40

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Solution

The fourth proportional to 315,059.76, 472,451.40 and 115,328.40 is: 172,942.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,059.76 : 472,451.40 = 115,328.40 : x
  2. Step 2: Convert to fraction form
    315,059.76/472,451.40 = 115,328.40/x
  3. Step 3: Cross multiply
    315,059.76x = 472,451.40 × 115,328.40
  4. Step 4: Simplify right side
    315,059.76x = 54,487,064,039.76
  5. Step 5: Solve for x
    x = 54,487,064,039.76/315,059.76
  6. Step 6: Final answer
    x = 172,942.00

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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.