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Finding the Fourth Proportional to 249,715, 374,572.86 and 101,971

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Solution

The fourth proportional to 249,715, 374,572.86 and 101,971 is: 152,956.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,715 : 374,572.86 = 101,971 : x
  2. Step 2: Convert to fraction form
    249,715/374,572.86 = 101,971/x
  3. Step 3: Cross multiply
    249,715x = 374,572.86 × 101,971
  4. Step 4: Simplify right side
    249,715x = 38,195,569,107.06
  5. Step 5: Solve for x
    x = 38,195,569,107.06/249,715
  6. Step 6: Final answer
    x = 152,956.65

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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.