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Finding the Fourth Proportional to 314,314.40, 470,780.40 and 272,842.40

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Solution

The fourth proportional to 314,314.40, 470,780.40 and 272,842.40 is: 408,663.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,314.40 : 470,780.40 = 272,842.40 : x
  2. Step 2: Convert to fraction form
    314,314.40/470,780.40 = 272,842.40/x
  3. Step 3: Cross multiply
    314,314.40x = 470,780.40 × 272,842.40
  4. Step 4: Simplify right side
    314,314.40x = 128,448,854,208.96
  5. Step 5: Solve for x
    x = 128,448,854,208.96/314,314.40
  6. Step 6: Final answer
    x = 408,663.60

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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.