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Finding the Fourth Proportional to 315,258.72, 473,102.28 and 128,304.24

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Solution

The fourth proportional to 315,258.72, 473,102.28 and 128,304.24 is: 192,543.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,258.72 : 473,102.28 = 128,304.24 : x
  2. Step 2: Convert to fraction form
    315,258.72/473,102.28 = 128,304.24/x
  3. Step 3: Cross multiply
    315,258.72x = 473,102.28 × 128,304.24
  4. Step 4: Simplify right side
    315,258.72x = 60,701,028,477.67
  5. Step 5: Solve for x
    x = 60,701,028,477.67/315,258.72
  6. Step 6: Final answer
    x = 192,543.54

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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.