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Finding the Fourth Proportional to 316,409.76, 436,771.44 and 207,555.52

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Solution

The fourth proportional to 316,409.76, 436,771.44 and 207,555.52 is: 286,509.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,409.76 : 436,771.44 = 207,555.52 : x
  2. Step 2: Convert to fraction form
    316,409.76/436,771.44 = 207,555.52/x
  3. Step 3: Cross multiply
    316,409.76x = 436,771.44 × 207,555.52
  4. Step 4: Simplify right side
    316,409.76x = 90,654,323,350.35
  5. Step 5: Solve for x
    x = 90,654,323,350.35/316,409.76
  6. Step 6: Final answer
    x = 286,509.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.