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Finding the Fourth Proportional to 287,207.60, 430,811.40 and 227,721.20

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Solution

The fourth proportional to 287,207.60, 430,811.40 and 227,721.20 is: 341,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,207.60 : 430,811.40 = 227,721.20 : x
  2. Step 2: Convert to fraction form
    287,207.60/430,811.40 = 227,721.20/x
  3. Step 3: Cross multiply
    287,207.60x = 430,811.40 × 227,721.20
  4. Step 4: Simplify right side
    287,207.60x = 98,104,888,981.68
  5. Step 5: Solve for x
    x = 98,104,888,981.68/287,207.60
  6. Step 6: Final answer
    x = 341,581.80

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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.