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Finding the Fourth Proportional to 210,682.58, 316,148.60 and 77,656.28

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Solution

The fourth proportional to 210,682.58, 316,148.60 and 77,656.28 is: 116,530.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,682.58 : 316,148.60 = 77,656.28 : x
  2. Step 2: Convert to fraction form
    210,682.58/316,148.60 = 77,656.28/x
  3. Step 3: Cross multiply
    210,682.58x = 316,148.60 × 77,656.28
  4. Step 4: Simplify right side
    210,682.58x = 24,550,924,203.21
  5. Step 5: Solve for x
    x = 24,550,924,203.21/210,682.58
  6. Step 6: Final answer
    x = 116,530.39

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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.