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Finding the Fourth Proportional to 450,344.72, 621,447.72 and 249,140.72

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Solution

The fourth proportional to 450,344.72, 621,447.72 and 249,140.72 is: 343,798.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,344.72 : 621,447.72 = 249,140.72 : x
  2. Step 2: Convert to fraction form
    450,344.72/621,447.72 = 249,140.72/x
  3. Step 3: Cross multiply
    450,344.72x = 621,447.72 × 249,140.72
  4. Step 4: Simplify right side
    450,344.72x = 154,827,932,403.16
  5. Step 5: Solve for x
    x = 154,827,932,403.16/450,344.72
  6. Step 6: Final answer
    x = 343,798.71

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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.