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Finding the Fourth Proportional to 315,312.40, 472,277.40 and 273,840.40

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Solution

The fourth proportional to 315,312.40, 472,277.40 and 273,840.40 is: 410,160.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,312.40 : 472,277.40 = 273,840.40 : x
  2. Step 2: Convert to fraction form
    315,312.40/472,277.40 = 273,840.40/x
  3. Step 3: Cross multiply
    315,312.40x = 472,277.40 × 273,840.40
  4. Step 4: Simplify right side
    315,312.40x = 129,328,632,126.96
  5. Step 5: Solve for x
    x = 129,328,632,126.96/315,312.40
  6. Step 6: Final answer
    x = 410,160.31

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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.