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Finding the Fourth Proportional to 631,972.80, 948,088.80 and 211,550.40

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Solution

The fourth proportional to 631,972.80, 948,088.80 and 211,550.40 is: 317,368.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,972.80 : 948,088.80 = 211,550.40 : x
  2. Step 2: Convert to fraction form
    631,972.80/948,088.80 = 211,550.40/x
  3. Step 3: Cross multiply
    631,972.80x = 948,088.80 × 211,550.40
  4. Step 4: Simplify right side
    631,972.80x = 200,568,564,875.52
  5. Step 5: Solve for x
    x = 200,568,564,875.52/631,972.80
  6. Step 6: Final answer
    x = 317,368.98

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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.