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Finding the Fourth Proportional to 315,718.08, 473,752.08 and 128,715.12

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Solution

The fourth proportional to 315,718.08, 473,752.08 and 128,715.12 is: 193,144.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,718.08 : 473,752.08 = 128,715.12 : x
  2. Step 2: Convert to fraction form
    315,718.08/473,752.08 = 128,715.12/x
  3. Step 3: Cross multiply
    315,718.08x = 473,752.08 × 128,715.12
  4. Step 4: Simplify right side
    315,718.08x = 60,979,055,827.45
  5. Step 5: Solve for x
    x = 60,979,055,827.45/315,718.08
  6. Step 6: Final answer
    x = 193,144.01

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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.