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Finding the Fourth Proportional to 450,237.44, 621,320 and 249,033.28

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Solution

The fourth proportional to 450,237.44, 621,320 and 249,033.28 is: 343,661.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,237.44 : 621,320 = 249,033.28 : x
  2. Step 2: Convert to fraction form
    450,237.44/621,320 = 249,033.28/x
  3. Step 3: Cross multiply
    450,237.44x = 621,320 × 249,033.28
  4. Step 4: Simplify right side
    450,237.44x = 154,729,357,529.60
  5. Step 5: Solve for x
    x = 154,729,357,529.60/450,237.44
  6. Step 6: Final answer
    x = 343,661.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.