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Finding the Fourth Proportional to 249,614.87, 374,420.91 and 99,889.80

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Solution

The fourth proportional to 249,614.87, 374,420.91 and 99,889.80 is: 149,834.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,614.87 : 374,420.91 = 99,889.80 : x
  2. Step 2: Convert to fraction form
    249,614.87/374,420.91 = 99,889.80/x
  3. Step 3: Cross multiply
    249,614.87x = 374,420.91 × 99,889.80
  4. Step 4: Simplify right side
    249,614.87x = 37,400,829,815.72
  5. Step 5: Solve for x
    x = 37,400,829,815.72/249,614.87
  6. Step 6: Final answer
    x = 149,834.14

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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.