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Finding the Fourth Proportional to 249,971.49, 375,012.32 and 72,485.91

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Solution

The fourth proportional to 249,971.49, 375,012.32 and 72,485.91 is: 108,744.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,971.49 : 375,012.32 = 72,485.91 : x
  2. Step 2: Convert to fraction form
    249,971.49/375,012.32 = 72,485.91/x
  3. Step 3: Cross multiply
    249,971.49x = 375,012.32 × 72,485.91
  4. Step 4: Simplify right side
    249,971.49x = 27,183,108,913.98
  5. Step 5: Solve for x
    x = 27,183,108,913.98/249,971.49
  6. Step 6: Final answer
    x = 108,744.84

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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.