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Finding the Fourth Proportional to 607,443.87, 911,190.78 and 208,359.03

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Solution

The fourth proportional to 607,443.87, 911,190.78 and 208,359.03 is: 312,547.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,443.87 : 911,190.78 = 208,359.03 : x
  2. Step 2: Convert to fraction form
    607,443.87/911,190.78 = 208,359.03/x
  3. Step 3: Cross multiply
    607,443.87x = 911,190.78 × 208,359.03
  4. Step 4: Simplify right side
    607,443.87x = 189,854,827,065.74
  5. Step 5: Solve for x
    x = 189,854,827,065.74/607,443.87
  6. Step 6: Final answer
    x = 312,547.11

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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.