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Finding the Fourth Proportional to 368,779.80, 553,169.70 and 325,477.20

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Solution

The fourth proportional to 368,779.80, 553,169.70 and 325,477.20 is: 488,215.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,779.80 : 553,169.70 = 325,477.20 : x
  2. Step 2: Convert to fraction form
    368,779.80/553,169.70 = 325,477.20/x
  3. Step 3: Cross multiply
    368,779.80x = 553,169.70 × 325,477.20
  4. Step 4: Simplify right side
    368,779.80x = 180,044,125,080.84
  5. Step 5: Solve for x
    x = 180,044,125,080.84/368,779.80
  6. Step 6: Final answer
    x = 488,215.80

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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.