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Finding the Fourth Proportional to 607,360.80, 911,041.20 and 213,376.80

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Solution

The fourth proportional to 607,360.80, 911,041.20 and 213,376.80 is: 320,065.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,360.80 : 911,041.20 = 213,376.80 : x
  2. Step 2: Convert to fraction form
    607,360.80/911,041.20 = 213,376.80/x
  3. Step 3: Cross multiply
    607,360.80x = 911,041.20 × 213,376.80
  4. Step 4: Simplify right side
    607,360.80x = 194,395,055,924.16
  5. Step 5: Solve for x
    x = 194,395,055,924.16/607,360.80
  6. Step 6: Final answer
    x = 320,065.20

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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.