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Finding the Fourth Proportional to 455,497.80, 683,246.70 and 139,970.40

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Solution

The fourth proportional to 455,497.80, 683,246.70 and 139,970.40 is: 209,955.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,497.80 : 683,246.70 = 139,970.40 : x
  2. Step 2: Convert to fraction form
    455,497.80/683,246.70 = 139,970.40/x
  3. Step 3: Cross multiply
    455,497.80x = 683,246.70 × 139,970.40
  4. Step 4: Simplify right side
    455,497.80x = 95,634,313,897.68
  5. Step 5: Solve for x
    x = 95,634,313,897.68/455,497.80
  6. Step 6: Final answer
    x = 209,955.60

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Similar ratio
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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.