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Finding the Fourth Proportional to 450,291, 621,421.08 and 249,087

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Solution

The fourth proportional to 450,291, 621,421.08 and 249,087 is: 343,750.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,291 : 621,421.08 = 249,087 : x
  2. Step 2: Convert to fraction form
    450,291/621,421.08 = 249,087/x
  3. Step 3: Cross multiply
    450,291x = 621,421.08 × 249,087
  4. Step 4: Simplify right side
    450,291x = 154,787,912,553.96
  5. Step 5: Solve for x
    x = 154,787,912,553.96/450,291
  6. Step 6: Final answer
    x = 343,750.85

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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.