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Finding the Fourth Proportional to 300,386.97, 450,624.18 and 90,041.31

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Solution

The fourth proportional to 300,386.97, 450,624.18 and 90,041.31 is: 135,075.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,386.97 : 450,624.18 = 90,041.31 : x
  2. Step 2: Convert to fraction form
    300,386.97/450,624.18 = 90,041.31/x
  3. Step 3: Cross multiply
    300,386.97x = 450,624.18 × 90,041.31
  4. Step 4: Simplify right side
    300,386.97x = 40,574,791,484.88
  5. Step 5: Solve for x
    x = 40,574,791,484.88/300,386.97
  6. Step 6: Final answer
    x = 135,075.07

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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.