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Finding the Fourth Proportional to 453,313.60, 679,970.40 and 272,910.40

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Solution

The fourth proportional to 453,313.60, 679,970.40 and 272,910.40 is: 409,365.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,313.60 : 679,970.40 = 272,910.40 : x
  2. Step 2: Convert to fraction form
    453,313.60/679,970.40 = 272,910.40/x
  3. Step 3: Cross multiply
    453,313.60x = 679,970.40 × 272,910.40
  4. Step 4: Simplify right side
    453,313.60x = 185,570,993,852.16
  5. Step 5: Solve for x
    x = 185,570,993,852.16/453,313.60
  6. Step 6: Final answer
    x = 409,365.60

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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.