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Finding the Fourth Proportional to 607,321.30, 910,981.95 and 213,337.30

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Solution

The fourth proportional to 607,321.30, 910,981.95 and 213,337.30 is: 320,005.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,321.30 : 910,981.95 = 213,337.30 : x
  2. Step 2: Convert to fraction form
    607,321.30/910,981.95 = 213,337.30/x
  3. Step 3: Cross multiply
    607,321.30x = 910,981.95 × 213,337.30
  4. Step 4: Simplify right side
    607,321.30x = 194,346,429,561.74
  5. Step 5: Solve for x
    x = 194,346,429,561.74/607,321.30
  6. Step 6: Final answer
    x = 320,005.95

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Double scale
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Similar ratio
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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.