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Finding the Fourth Proportional to 450,342.72, 621,444.96 and 249,138.72

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Solution

The fourth proportional to 450,342.72, 621,444.96 and 249,138.72 is: 343,795.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,342.72 : 621,444.96 = 249,138.72 : x
  2. Step 2: Convert to fraction form
    450,342.72/621,444.96 = 249,138.72/x
  3. Step 3: Cross multiply
    450,342.72x = 621,444.96 × 249,138.72
  4. Step 4: Simplify right side
    450,342.72x = 154,826,001,884.85
  5. Step 5: Solve for x
    x = 154,826,001,884.85/450,342.72
  6. Step 6: Final answer
    x = 343,795.95

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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.