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Finding the Fourth Proportional to 316,444.34, 436,904.60 and 187,424.30

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Solution

The fourth proportional to 316,444.34, 436,904.60 and 187,424.30 is: 258,770.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,444.34 : 436,904.60 = 187,424.30 : x
  2. Step 2: Convert to fraction form
    316,444.34/436,904.60 = 187,424.30/x
  3. Step 3: Cross multiply
    316,444.34x = 436,904.60 × 187,424.30
  4. Step 4: Simplify right side
    316,444.34x = 81,886,538,821.78
  5. Step 5: Solve for x
    x = 81,886,538,821.78/316,444.34
  6. Step 6: Final answer
    x = 258,770.75

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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.