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Finding the Fourth Proportional to 325,875.80, 488,813.70 and 213,901.40

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Solution

The fourth proportional to 325,875.80, 488,813.70 and 213,901.40 is: 320,852.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,875.80 : 488,813.70 = 213,901.40 : x
  2. Step 2: Convert to fraction form
    325,875.80/488,813.70 = 213,901.40/x
  3. Step 3: Cross multiply
    325,875.80x = 488,813.70 × 213,901.40
  4. Step 4: Simplify right side
    325,875.80x = 104,557,934,769.18
  5. Step 5: Solve for x
    x = 104,557,934,769.18/325,875.80
  6. Step 6: Final answer
    x = 320,852.10

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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.