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Finding the Fourth Proportional to 249,859, 374,788.86 and 102,115

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Solution

The fourth proportional to 249,859, 374,788.86 and 102,115 is: 153,172.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,859 : 374,788.86 = 102,115 : x
  2. Step 2: Convert to fraction form
    249,859/374,788.86 = 102,115/x
  3. Step 3: Cross multiply
    249,859x = 374,788.86 × 102,115
  4. Step 4: Simplify right side
    249,859x = 38,271,564,438.90
  5. Step 5: Solve for x
    x = 38,271,564,438.90/249,859
  6. Step 6: Final answer
    x = 153,172.65

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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.