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Finding the Fourth Proportional to 210,680.58, 316,145.60 and 77,654.28

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Solution

The fourth proportional to 210,680.58, 316,145.60 and 77,654.28 is: 116,527.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,680.58 : 316,145.60 = 77,654.28 : x
  2. Step 2: Convert to fraction form
    210,680.58/316,145.60 = 77,654.28/x
  3. Step 3: Cross multiply
    210,680.58x = 316,145.60 × 77,654.28
  4. Step 4: Simplify right side
    210,680.58x = 24,550,058,943.17
  5. Step 5: Solve for x
    x = 24,550,058,943.17/210,680.58
  6. Step 6: Final answer
    x = 116,527.39

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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.