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Finding the Fourth Proportional to 414,547.60, 621,821.40 and 148,316.80

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Solution

The fourth proportional to 414,547.60, 621,821.40 and 148,316.80 is: 222,475.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,547.60 : 621,821.40 = 148,316.80 : x
  2. Step 2: Convert to fraction form
    414,547.60/621,821.40 = 148,316.80/x
  3. Step 3: Cross multiply
    414,547.60x = 621,821.40 × 148,316.80
  4. Step 4: Simplify right side
    414,547.60x = 92,226,560,219.52
  5. Step 5: Solve for x
    x = 92,226,560,219.52/414,547.60
  6. Step 6: Final answer
    x = 222,475.20

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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.