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Finding the Fourth Proportional to 315,090.70, 472,706.55 and 115,407.10

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Solution

The fourth proportional to 315,090.70, 472,706.55 and 115,407.10 is: 173,136.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,090.70 : 472,706.55 = 115,407.10 : x
  2. Step 2: Convert to fraction form
    315,090.70/472,706.55 = 115,407.10/x
  3. Step 3: Cross multiply
    315,090.70x = 472,706.55 × 115,407.10
  4. Step 4: Simplify right side
    315,090.70x = 54,553,692,086.51
  5. Step 5: Solve for x
    x = 54,553,692,086.51/315,090.70
  6. Step 6: Final answer
    x = 173,136.47

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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.