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Finding the Fourth Proportional to 210,808.68, 316,136.88 and 70,534.52

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Solution

The fourth proportional to 210,808.68, 316,136.88 and 70,534.52 is: 105,776.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,808.68 : 316,136.88 = 70,534.52 : x
  2. Step 2: Convert to fraction form
    210,808.68/316,136.88 = 70,534.52/x
  3. Step 3: Cross multiply
    210,808.68x = 316,136.88 × 70,534.52
  4. Step 4: Simplify right side
    210,808.68x = 22,298,563,085.10
  5. Step 5: Solve for x
    x = 22,298,563,085.10/210,808.68
  6. Step 6: Final answer
    x = 105,776.30

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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.