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Finding the Fourth Proportional to 315,601.92, 473,402.88 and 128,580.48

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Solution

The fourth proportional to 315,601.92, 473,402.88 and 128,580.48 is: 192,870.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,601.92 : 473,402.88 = 128,580.48 : x
  2. Step 2: Convert to fraction form
    315,601.92/473,402.88 = 128,580.48/x
  3. Step 3: Cross multiply
    315,601.92x = 473,402.88 × 128,580.48
  4. Step 4: Simplify right side
    315,601.92x = 60,870,369,543.78
  5. Step 5: Solve for x
    x = 60,870,369,543.78/315,601.92
  6. Step 6: Final answer
    x = 192,870.72

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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.