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Finding the Fourth Proportional to 315,252.72, 473,093.28 and 128,298.24

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Solution

The fourth proportional to 315,252.72, 473,093.28 and 128,298.24 is: 192,534.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,252.72 : 473,093.28 = 128,298.24 : x
  2. Step 2: Convert to fraction form
    315,252.72/473,093.28 = 128,298.24/x
  3. Step 3: Cross multiply
    315,252.72x = 473,093.28 × 128,298.24
  4. Step 4: Simplify right side
    315,252.72x = 60,697,035,179.83
  5. Step 5: Solve for x
    x = 60,697,035,179.83/315,252.72
  6. Step 6: Final answer
    x = 192,534.53

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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.