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Finding the Fourth Proportional to 304,370.40, 456,555.60 and 288,040.80

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Solution

The fourth proportional to 304,370.40, 456,555.60 and 288,040.80 is: 432,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,370.40 : 456,555.60 = 288,040.80 : x
  2. Step 2: Convert to fraction form
    304,370.40/456,555.60 = 288,040.80/x
  3. Step 3: Cross multiply
    304,370.40x = 456,555.60 × 288,040.80
  4. Step 4: Simplify right side
    304,370.40x = 131,506,640,268.48
  5. Step 5: Solve for x
    x = 131,506,640,268.48/304,370.40
  6. Step 6: Final answer
    x = 432,061.20

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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.