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Finding the Fourth Proportional to 315,982.16, 473,659.32 and 129,127.76

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Solution

The fourth proportional to 315,982.16, 473,659.32 and 129,127.76 is: 193,563.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,982.16 : 473,659.32 = 129,127.76 : x
  2. Step 2: Convert to fraction form
    315,982.16/473,659.32 = 129,127.76/x
  3. Step 3: Cross multiply
    315,982.16x = 473,659.32 × 129,127.76
  4. Step 4: Simplify right side
    315,982.16x = 61,162,566,994.72
  5. Step 5: Solve for x
    x = 61,162,566,994.72/315,982.16
  6. Step 6: Final answer
    x = 193,563.35

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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.